Best Exam Practice Material for Huawei H12-821_V1.0-ENU Exam Q&A

Jonnie Karnath2023-03-23T04:32:50+00:00

If you want to reduce your chances of failure and increase your chances of success, consider using Huawei H12-821_V1.0-ENU exam Q&A to prepare for your HCIP-Datacom-Core Technology V1.0 exam. Certspots Huawei H12-821_V1.0-ENU exam Q&As are created by industry experts who have years of experience in the field of Huawei. The questions are updated regularly to ensure that they reflect the most current trends and technologies in the industry, and to keep up with any changes to the exam format or content. These study materials can help candidates build a solid foundation of knowledge and can help you feel more confident and prepared on the day of the exam.

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1. Which of the following descriptions about the stack topology connection method is wrong?

Depending on the stack connection method, the stack can form two connection topologies: link and ring

When the stack member switches are far away, you can use the chain connection method

When the reliability of the network requirements is high, it is recommended to use the ring connection mode

When the utilization rate of the stacking link is high, it is recommended to use the chain connection method

2. SDN is a new type of network innovation architecture. Which of the following descriptions about the value of SDN is correct? (Multiple choice)

Realize centralized management and simplify network management and operation and maintenance

Shield technical details, reduce network complexity, and reduce operation and maintenance costs

Realize rapid service deployment and shorten service launch time

Realize automatic tuning and improve network utilization

3. The four routers run IS-IS and have established adjacency. The area numbers and router levels are shown in the figure. Which of the following is correct?

The LSP of R4 does not exist in the LSDB of R3 router

The LSP of R4 does not exist in the LSDB of the R2 router

The LSP of R3 does not exist in the LSDB of the R2 router

The LSP of R4 does not exist in the LSDB of router R1

4. As shown in the figure, the GEO/0/0 and GEO/0/1 interfaces of RTA are respectively connected to departments 1 and 2, and their network segments are respectively 10.1.2.0/24 and 10.1.3.0/24, which are restricted departments Between 1 and 2, deploy traffic-filter on RTA, which of the following deployment methods is correct? (Multiple choice)

Configure ACL3000 to reject the traffic whose source is 10.1.2.0/24 and whose destination is 10.1.3.0/24, call the traffic-filter in the outbound direction on GE0/0/1 to call ACL3000

Configure ACL3000 to reject the traffic whose source is 10.1.3.0/24 and whose destination is 10.1.2.0/24, call the traffic-filter in the outbound direction on GE0/0/0 to call ACL3000

Configure ACL3000 to reject the traffic whose source is 10.1.2.0/24 and whose destination is 10.1.3.0/24, call the traffic-filter in the inbound direction on G0/0/0 to call ACL3000

Configure ACL3000 to reject the traffic whose source is 10.1.3.0/24 and destination is 10.1.2.0/24, and call the traffic-filter in the inbound direction on GE0/0/1 to call ACL3000

5. Which of the following attributes must be recognized by all BGP devices and exist in Update packets?

Recognized as arbitrary

Optional Transition

Optional non-transitional

Recognized as obligatory

6. Which of the following descriptions about AS_Path is wrong

When there are two or more routes with the same destination in the router, these routes can use this attribute to compare the advantages and disadvantages of each other. The longer the AS_Path, the better the path

AS_Path refers to the list of ASs that BGP routes have experienced in the path of transmission

AS_Path is a recognized mandatory attribute in BGP

BGP will not accept the route that contains this AS Number in the AS_Path attribute

7. Three elements of the Server map table of the USG series firewall, excluding

Destination port number

Agreement number

Destination IP

Source lP

8. IPv6 address 2001:0DB8:000A:C030:0000:0000:09A0: CDEF is ______ after compression. (If there are letters in the answer, please use uppercase format)

9. Which of the following circumstances will a router running IS-IS not generate an LSP?

Modify the IP address of the IS-IS interface

Change the sysmane of the router

IS-IS neighbor UP or Downm

Modify the Cost value of the IS-IS interface

10. Which of the following functions is implemented using NDP 135/136 type messages?

Duplicate address detection

Neighbor Status Tracking

Address resolution

Router Discovery

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11. Which of the following metric types does the IS-IS protocol support? (Multiple choice)

Tos

Narrow

Default

WIDE

12. The ABR in the OSPF complete Stub area does not flood the area with Type 3, Type 4, and Type 5 LSAs. Therefore, the ABR in the complete Stub area needs to manually release a default route to the area to guide how the data packets reach the destination of outside of the AS.

True

False

13. One of the characteristics of OSPF is that it only supports MD5 authentication.

True

False

14. The function of routing protocol priority is to assign different priorities to routes discovered by different protocols, so that when a router learns the same route from different routing protocols at the same time, it can have a selection priority.

True

False

15. Which of the following types does IS-IS PDU include? (Multiple choice)

LSP

CSNP

PSNP

IIH

16. ICMPv6 has two types of Error Messages and Information Messages.

True

False

17. When the payload is an ICMPv6 message, if the extension header is not considered, what is the value of the Next Header field in the IPv6 header?

18. Which of the following configurations must be included in order for non-directly connected EBGP neighbors to be established normally? (Multiple choice)

peer ebgp-max-hop

Peer connect-interface

peer ignore

peer as-number

19. Will setting the Community attribute of the route through the routing policy affect the route selection?

It can be indirectly affected. By setting the Community attribute of the route, the route can be classified, and then set different route selection-related attributes according to the category, such as Local_Pre, MED, etc., to achieve the purpose of affecting route selection

It cannot be affected, because the Community attribute of the route is a non-transitional attribute and cannot be passed between routers

It can be affected indirectly. By setting the Community attribute of the route, the route can be classified, and then different attributes related to route selection can be set according to the category. These attributes only include Loacal_Pre and MED, so as to achieve the purpose of affecting route selection

After the router receives the routing update whose Commmity attribute is No_ Advertise, it will not advertise it outside the local A

20. A network runs IS-IS. The LSP information of a router R4 in the network is shown in the figure. Which of the following statements is correct? (Multiple choice)

The LSP is an LSP generated by a pseudo node

The cost of R4 to reach the external route is 64

The external route described by this LSP is 10.0.4.4/32

The System ID of R4 is 4004.0000.0004

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21. What are the following possible reasons why a new MAC entry cannot be added to the switch? (Multiple choice)

The host is configured with static ARP

The MAC entry exceeds the device specification

The port of the device is configured with MAC address learning enabled

Configure MAC black hole and MAC learning limit

22. RSTP redefines the port role, please match the RSTP port role with its function. (Drag and drop questions)

23. When two routers exchange database information through DD messages, a master-slave relationship is first formed, and the router with the larger ID must be the master.

True

False

24. Which of the following descriptions about configuring roaming groups is wrong?

After the AC is enabled with the Master Controller function, it joins the roaming group by default and can manage other ACs

Master Controller is a logical role that can be assumed by any common entity AC

Member ACs need to designate an AC as their own Master Controller

The Master Controller manages each AC through the CAPWAP tunnel

25. In WLAN networking, which of the following backup technologies has the lowest cost and the slowest switching speed?

Dual-link cold backup

Dual link hot standby

N+1 backup

VRRP dual-machine hot standby

26. Routing policies support multiple operations on routing attributes. Please match the parameters of the following apply clauses with their functions. (Drag and drop questions)

27. The following statements about the election of the active port in link aggregation LACP mode. Which one is correct?

Compare the interface priority first, and continue to compare the interface number if it cannot be judged that it is better. The smaller the better.

Only compare interface priority

Compare device priorities

Only compare interface numbers

28. A typical NetStream system consists of two parts: network flow data exporter NDE and network flow data collector NSC.

TRUE

FALSE

29. Which of the following statements about multicast is correct? (Multiple choice)

The multicast destination MAC address is automatically generated according to the EUI-64 algorithm

The range of multicast destination IP address is 224.0.0.0~239.255.255.255

Through the RPF mechanism and the multicast routing protocol, the multicast network can finally form a multicast forwarding path without loops, suboptimal and repeated packets. This path can be called a multicast distribution tree

RPF routes can only be elected from unicast routes

30. IGMP Snooping mainly solves the problem of:

Legality of IGMP Report messages

There are many receiver hosts on the network segment, and the router will receive many IGMP Report messages.

Solve the problem of broadcasting multicast data packets on Layer 2 devices, and use them to manage and control the forwarding of multicast data packets

The receiver host only supports the IGMPv2 protocol, but the SSM multicast model is used in the network

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31. A certain router runs IS-IS, and its output information is shown in the figure. Which of the following statements is correct?

The cycle of sending llH on the s4/0/0 interface is 30s

The circuit-level1 of the s4/0/0 interface is Level-1

The Cost value of the s4/0/0 interface is 20

The s4/0/0 interface supports IPv6

32. The state inspection firewall uses the session table to track the active TCP session and UDP session, and the firewall security policy determines which sessions to establish, and the data packet will only be forwarded when it is associated with the session.

True

False

33. Which of the following descriptions about Policy-Based-Routing and Routing-Policy are correct? (Multiple choice)

The deployment of the routing policy is based on the forwarding plane and will not affect the routing table entries

After the device receives the message, the policy routing will first search for the policy for matching and forwarding. If the match fails, it will search the routing table for forwarding

Routing policies can only be formulated based on source addresses

Policy routing can formulate policies based on parameters such as source and destination IP addresses, protocol types, and packet sizes

34. There are many ways to establish clusters with modular switches. What methods does Huawei modular switches support to establish clusters? (Multiple choice)

Established through the cluster card on the interface board

Established through cluster cards on the main control board

Established through the service interface on the interface board

Established through the cluster card on the switching network board

35. When OSPF runs in a broadcast network, it is necessary to elect DR and BDR.

So, in which of the following states, the election of DR and BDR will be carried out?

2-way status

Exchange status

Full status

Init state

36. Two level-1 routers in different areas can form a neighbor relationship.

True

False

37. On a broadcast or NBMA network, not all neighbors will establish an adjacency relationship.

True

False

38. Router-LSA can describe different link types. Which of the following does not belong to the Router LSA link type?

Link Type can be used to describe the connection to the untapped network, namely SubNet

Link Type can be used to describe the connection to the transit network, namely TranNet

Link Type can be used to describe a point-to-point connection to another router, ie p2p

Link Type can be used to describe the virtual connection, that is, VlinkE and Link Type can be used to describe the point-to-multipoint connection to another router group, that is, p2mp

39. RSTP has been improved on the basis of STP, realizing fast convergence of network topology. However, both RSTP and STP are based on a single spanning tree, and there are some shortcomings, such as? (Multiple choice)

Unable to achieve load balancing of data traffic in VLAN

After the link is blocked, it will carry part of the traffic, which will not cause bandwidth waste

It will cause some VLAN paths to fail

It will shovel the problem of suboptimal path

40. The flow behavior of MQC supports multiple actions on packets. Please match the actions of the following MQC flow behaviors with their functions. (Drag and drop questions)

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41. Which of the following description of how to establish a BFD session is wrong?

BFD sessions can only be established dynamically

Static configuration of the BFD session refers to configuring the BFD session parameters through the command line, including local identifiers and remote identifiers, etc.

When dynamically establishing a BFD session, dynamically assign a local identifier.

The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area.

42. NAC (Network Access Control1) network access control includes three authentication methods. () authentication, MAC authentication and Porta authentication. (If English words are involved, please use uppercase)

43. The correct description about LSA is?

The combination of LS type, LS sequence number and Advertising Router together identifies an LSA

The combination of LS type, Link State ID and Advertising Router jointly identifies an LSA

The combination of LS type, Link State ID and LS sequence number jointly identifies an LSA

The combination of LS sequence number, Link State ID and Advertising Router jointly identifies an LSA

44. In RSTP, many optional protection functions are set to prevent the Layer 2 network from being invaded by malicious users.

So which of the following descriptions about TC-BPDU functions are correct? (Multiple choice)

By default, the time required for the device to process the maximum number of topology change packets is Hello Time

After this function is enabled, for other TC BPDU packets that exceed the threshold, the device only processes them once after the timer expires

The anti-TC-BPDU attack function can be configured and enabled on all interfaces

By default, the maximum number of topology change packets processed by the device within a specified time is 2

45. In the broadcast network shown in the figure, OSPF runs on four routers, and they are in the same area and the same network segment. OSPF will automatically elect a DR and a BDR, and the other two routers will become DR other, so as to achieve a better backup effect.

TRUE

FALSE

46. In the PIM protocol, which of the following packets have destination addresses that are unicast addresses? (Multiple choice)

Assert

Bootstrap

Graft

47. The OSPF protocol has authentication capabilities for all data packets exchanged between neighboring routers. In the VRP system, which of the following algorithms does OSPF support?

AES

DES

MD5

RSA

48. After the stack is split, the party that loses the MAD election will be in the ( ) state. (The first letter is capitalized)

49. The FIB table is located on the data plane of the router, and each forwarding table entry specifies information such as the outgoing interface and the next-hop IP address to reach a certain destination.

Which of the following meanings does the B field in FLAG represent?

Static routing

Black hole routing

Available routes

Gateway routing

50. As shown in the figure, router R has static routes to three network segments of Site A, Site B, and Site C respectively. The administrator needs to configure to import the routes of Site A and Site B into the OSPF Domain. Please set The commands for configuring RE are completed below.

1:______

2:______

3:______

(English, all lowercase)

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51. OSPF supports multiple processes. Multiple different OSPF processes can run on the same router, and they do not affect each other and are independent of each other. The routing interaction between different OSPF processes is equivalent to the routing interaction between different routing protocols.

True

False

52. Which of the following descriptions about RP in PIM-SM are correct? (Multiple choice)

Only static RPs can specify which multicast groups the RP provides services for

Dynamic election of RP will involve two types of roles C-BSR and C-RP

RP is used to process source DR registration information and group member joining requests

Not all PIM routers in the network must know the address of the RP

53. The BGP protocol uses the peer default-route-advertise command to advertise routes to neighbors. At the same time, the changes in the DGP routing table are correct.

Generate a default route in the local BGP routing table, and send it to the IP routing table according to the routing selection result

No effect, no default route is generated in the local BGP routing table

Generate an active default route in the local BGF routing table and deliver the initial IP routing table

BGF generates an inactive default route from the table in the local area, but does not send it to the IP routing table

54. OSPF supports both area authentication and interface authentication. If these two authentication methods are configured at the same time, interface authentication is better than area authentication.

True

False

55. Through the linkage between BFD and MPLS LSP, BFD can be created dynamically to detect the connectivity of static or dynamic LSP .

TRUE

FALSE

56. Two hosts A and B are interconnected through the Internet. Now it is found that A can ping B but B cannot actively ping A. Which of the following is the possible reason? (Multiple choice)

There is a loop between B and A

TTL timeout from B to A

A firewall is enabled on host A

B does not have a route to A, or does not set a gateway

57. A medium-sized park network manages the network through the SNMP protocol. Which version of SNMP does the park manage?

All versions are available

SNMPv1

SNMPv2C

SNMPv3

58. The shortest path from the multicast source to the receiver becomes the shortest path tree SPT.

True

False

59. In the Portal authentication scenario based on MAC priority, when the user successfully completes Portal authentication and disconnects from the network within a certain period and reconnects, he can directly access through MAC authentication without entering the username and password to perform Porta1 authentication again.

True

False

60. As shown in the figure, it is part of the output information of the router RTD. In the following description of the output information, which option is correct?

Configure the time interval for sending GMP query messages on this interface to be 60s

The maximum response time contained in the IGIP query message on this interface is 0

The IGMP version enabled on this interface is version 1

The IGP status of the interface is down

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61. Which of the following statements about BGP security are correct? (Multiple choice)

Keychain authentication can be used between BGP neighbors to reduce the possibility of being attacked, and Keychain has a set of passwords, which can be automatically switched according to the configuration

When configuring the MD5 authentication password, if the simple option is used, the password will be saved in the configuration file in plain text, which poses a security risk

You can use the display bgp peer verbose command to view the authentication details of BGP peers

To prevent attackers from simulating real BGP protocol packets to attack the device, you can configure the GTSM function to detect the TTL value in the IP packet header

62. As shown in the figure, the four switches have run the RSTP protocol and completed the calculation of the spanning tree.

So, which of the following descriptions about port roles are correct? (Multiple choice)

The G0/0/2 port of SW2 is the AP port, and the G0/0/2 port of SW3 is the DP port

The G0/0/1 port of SW4 is the AP port, and the G0/0/2 port of SW4 is the RP port

The G0/0/2 port of SW2 is the DP port, and the G0/0/2 port of SW3 is the AP port

The G0/0/1 port of SW4 is the RP port, and the G0/0/2 port of SW4 is the AP port

63. Since VRRP protocol packets are encapsulated in IP packets, which of the following is the IP protocol number that identifies the upper layer protocol as VRRP in the IP packet header?

113

112

115

114

64. A socket is composed of 5-tuples, so which of the following options does not belong to the range of 5-tuples?

Source IP

Source MAC

Destination IP

Destination port

65. The differences between IGMP versions are: (Multiple choice)

IGMPv1 does not support group-specific queries, but IGMPv2 supports

IGMPv1/v2/v3 cannot support the SSM model

IGMPv1/v2 cannot elect a querier by itself, but IGMPv3 can

For members to leave, IGMPv2/Nv3 can voluntarily leave, but IGMPv1 cannot

66. Regarding the description of the Hello message in PIM-SM, the error is:

The routers periodically use Hello messages to keep in touch

In the PIM-SM network, the newly started multicast router needs to use Hello messages to discover neighbors and maintain neighbor relationships

Hello packets are sent to the multicast address 224.0.0.5

Elect DR in multi-router network segment through Hello message

67. As shown in the figure, four routers run IS-IS, and they are all Level1-1-2 routers. Which of the following descriptions are correct? (Multiple choice)

R1 and R2 can only establish a neighbor relationship of Level1-1

R1 and R4 can only establish a neighbor relationship of Level1-2

R1 and R3 can only establish the neighbor relationship of Level1-2

R3 and R4 establish the neighbor relationship of Level1-1 and Level1-2 at the same time

68. If a BGP device is configured with the ip as-path-filter 1 permit ^12. *35$ command, which of the following AS_Paths can be correctly matched?

AS_Path （ 123 35 28 ）

AS Path （ 35 123 28 ）

AS_Path （ 35 28 12 ）

AS_Path （ 12 28 35 ）

69. The output information of a certain router is as follows, please match the information on the left with the information on the right. (Drag and drop questions)

70. When the HSB backup group is enabled in the WLAN network, if the AP adds AP information offline on the standby AC after the active AC goes online, the AP status on the standby AC will be displayed as fault.

TRUE

FALSE

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71. The configuration of the two routers is shown in the figure, and they can establish OSPF adjacency.

TRUE

FALSE

72. Which of the following route types can OSPF refer to? (Multiple choice)

Direct routing

An OSPF instance different from itself

BGP

IS-IS

Static routing

73. The port role that cannot be in the forwarding state in RSTP is? (Multiple choice)

Alternate Port

Designated Port

RootPort

Backup Port

74. The traffic policy supports calling on the interface, but only supports calling the traffic policy in the outbound direction of the interface.

TRUE

FALSE

75. Please pair the following functions with the basic concepts in the VRRP protocol.

76. Routes are imported into BGP through the import-route command. Which of the following descriptions is correct?

The import-route command can only import IGP routes and static routes into BGP

By default, the Origin value of imported routes is IGP

When the imported routing protocol is ISIS, the process number must be specified

import-route cannot cooperate with route-policy to filter routes imported into BGP by other routing protocols

77. What are the conditions for volume matching of firewall security policies? (Multiple choice)

The source and destination safe area city

Source and destination IP addresses

Application

Message length

78. Which of the following values can be set for the security level of the security zone customized by the USG series firewall? (Multiple choice)

150

100

79. In the OSPF routing protocol, the calculation of intra-area routes involves only Router LSA, Network LSA and Summary LSA.

True

False

80. VLAN Pool can support multiple business VLANs at the same time mainly through one SSID, thereby reducing the broadcast domain and reducing the waste of IP addresses.

TRUE

FALSE

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81. The following is the output information of a router. The correct description of this information is:

The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the routing entry cannot be advertised to any BGP neighbors

The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the routing entry cannot be advertised to any other BGP peers

The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the routing entry can be advertised to any BGP neighbor

The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the routing entry cannot be advertised outside the local AS

82. If the router-id is configured in both the system view and the BGP view, BGP uses the router-id in the BGP view because the BGP view has a higher priority.

True

False

83. If a modular switch only supports the cluster card on the main control board to establish a cluster connection, it means that the modular switch uses the CSS2 stacking technology.

True

False

84. To configure OSPF area 10 as a Totally NSSA area, the command to be configured is:

[Huawei]ospf 1

[Huawei-ospf-1]area 10

[Huawei-ospf-1-area-0.0.0.10]nssa_______

(Please fill in lowercase English, no spaces, and use correct symbols)

85. After the stack split occurs, the MAD conflict handling mechanism will conduct MAD competition.

In the principle of MAD competition, within how many seconds is the difference between the startup and completion times of the stack considered to be the same?

5 seconds

20 seconds

15 seconds

10 seconds

86. Which of the following descriptions about OSPF default routing is wrong?

The OSPF default route can be issued by the Area Border Router (ABR) to issue Type 3 default LSAs to guide routers in the area to forward packets between areas

When the router has no exact matching route, it can forward the message through the default route

Due to the hierarchical management of OSPF routes, the priority of class 5 and class 7 default routes is higher than that of class 3 default routes

Autonomous System Boundary Router (ASBR) publishes default LSA of type 5 or default LSA of type 7 , which is used to guide routes in the autonomous system ( AS ) to access the outside of the autonomous system

87. In IS-IS, DIS is used to create and update pseudo nodes, and is responsible for generating link state protocol data unit LSP of pseudo nodes.

What is the priority of DIS by default?

127

88. As shown in the figure, RED calls ip as-path-filter1 in the inbound direction, then the route 10.0.0.0/24 will be learned by RE_D from the path _________. (Please fill in 1 or 2)

89. In a multi-level RR scenario, the first-level RR will be connected to a large number of second-level RRs, which may cause the BGP routing table of the first-level RR to overflow. What method can be used to reduce the risk of overflowing the BGP routing table of the first-level RR?

ORF

Routing Control

Route aggregation

Set the same Cluster--ID

90. Which of the following descriptions about BGP routing are correct? (Multiple choice)

Similar to ordinary IGP, BGP itself also calculates and generates routes

BGP supports network and import-route to inject routes

BGP can aggregate based on existing routing entries

The inport-route method supports injecting direct routes into the BGP routing table

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91. In the OSPF routing protocol, the asbr-summary command can be followed by the not-advertise parameter, which means not to advertise the aggregated route.

True

False

92. In IGMPv1, if all the multicast members of a group leave, how many seconds does it take for the router to delete the corresponding multicast forwarding entry?

130 seconds

180 seconds

160 seconds

90 seconds

93. In VRRP, when the device status becomes Master, it will immediately send a gratuitous ARP to refresh the MAC entry of the downstream device, thereby directing user traffic to this device.

True

False

94. Regarding multicast MAC addresses, which of the following statements are incorrect? (Multiple choice)

1 multicast MAC address correctly corresponds to 32 IP multicast addresses

The function of the multicast MAC address is to identify receivers belonging to the same multicast group on the link layer

The upper 24 bits of the multicast MAC address are 0x01005f, the 25th bit is fixed at 1, and the lower 23 bits of the MAC address are the lower 23 bits of the multicast IP address

A multicast MAC address uniquely corresponds to an IP multicast address

95. Two routers running IS-IS can only establish an adjacency relationship if the time interval of lH transmission is the same

True

False

96. Among the matters needing attention in configuring the Stub area, the correct description is:

The virtual connection can pass through the stub area

If an area is configured as a Stub area, all routers in the area must be configured with Stub area attributes

The backbone area can be configured as a stub area

ASBR can exist in the Stub area

97. Which part of the multicast network architecture is the IGMP protocol applied to?

The entire multicast network

Source network

Multicast forwarding network

Member side network

98. In VRRP, when a virtual router responds to an ARP request, it will use the MAC address of the directly connected interface of the main router.

TRUE

FALSE

99. What are the main difficulties in cutover? (Multiple choice)

Minimize the scope of business impact

Risk aversion at its best

Formulate a complete cutover plan

Profitable execution cutover

100. Which of the following descriptions about the security zone of the firewall is correct?

The built-in security zone of the firewall can be deleted

Different interfaces of the firewall can belong to the same security zone

The same interface of the firewall can belong to different security zones

Different security areas of the firewall can have the same priority

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101. By default, the OSPF port overhead is related to the bandwidth of the port. The calculation formula is bandwidth-reference/ban dwidth. The overhead is only calculated by OSPF itself and cannot be changed manually.

True

False

102. As shown in the figure, the ISIS neighbor relationship between R1 and R2 has just been established, and the database synchronization process between R1 and R2 is correct?

The packet sent by R1 to R2 is a Hello packet.

The packet sent by R1 to R2 is an LSP packet.

The packet sent by R1 to R2 is a PSNP packet.

The packet sent by R1 to R2 is a CSNP packet.

103. Which of the following items are included in the traffic matching conditions of the firewall security policy? (Multiple choice)

Source IP address

Source Safe Area

Packet length

Destination IP address

Application

Destination safe area

104. Which of the following is not the main function of NDP?

Path MTU Discovery

Neighbor Status Tracking

Duplicate address detection

Address

105. Which of the following LSA descriptions about various messages is wrong?

DD only contains the summary information of the LSA, which includes LS Type LS ID Advertising Router and LS Sequence Number

The LSACK message contains complete LSA information

LS Update message contains complete LSA information

LS Request message only has LS Type LS ID and Advertising Router

106. As shown in the figure, R1 and R2 form a VRRP backup group 1. By executing the vrrp vrid 1 virtual-ip ( ) command on R1, it can become the owner of the IP address, so that R1 is the Master and R2 is the Backup.

107. The output of a certain router is shown in the figure. According to the information analysis in the figure, which one of the following descriptions is correct?

The reason why there is no DR and BDR in the figure may be that the dr-priority of the peer router is set to 0

If the router's neighbor failure time adopts the default configuration and does not receive the Hello packet from the other party within 6 seconds shown in the figure, the state will become Down

The Hello packet sending interval used by this adjacency is 5 seconds

The network type used by the router must not be broadcast

108. In a broadcast network, what is the default interval for sending Hello by DIS?

10s

40s

3.3s

109. In PIM-DM, the router will start a pruning timer for the pruned downstream interface, and the interface will resume forwarding after the timer expires.

How many seconds is this timer by default?

210 seconds

270 seconds

300 seconds

180 seconds

110. As shown in the figure, the four routers in the same LAN run IS-IS, and R1 is DIS. Then R2, R3 R4 respectively establish adjacency relationship with R1, and R2, R3, R4 do not establish adjacency relationship.

True

False

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111. Which of the following scenarios is not suitable for deploying interface policy routing?

In the scenario where the enterprise network has multiple ISP egresses, different network segments of the intranet access the Internet through different ISP egresses

Modify the next-hop of traffic originating locally

On the core switch, the mutual access traffic between the internal network and the external network is drawn to the bypass AC device

On the core switch, the mutual access traffic between the internal network and the external network is drawn to the side-mounted security detection device

112. The four routers R1, R2, R3 and R4 enable OSPF to establish neighbor relationships. The topology and related parameters are shown in the figure. At this time, R2 is disconnected for some reason, so the Hello report transmitted between R1, R3 and R4 In the text, which of the following is the value of the BDR field?

12.12.12.2

12.12.12.3

12.12.12.1

0.0.0.0

2.2.2.2

1.1.1.1

113. A small enterprise needs to perform network cutover due to the replacement of the egress firewall. What are the preliminary preparations? (Multiple choice)

Smuf attack

ARP spoofing attack

ICMP attack

IP spoofing attack

114. Which of the following descriptions about the application of route reflectors in BGP are correct? (Multiple choice)

The route learned by the RR from the non-client IBGP peer is advertised to all clients of this RR

The route learned by the RR from the client is only advertised to all non-clients of this RR

RR advertises the routes learned from EBGP peers to all non-clients and clients

When RR receives the route sent by the peer, it only selects the best route for reflection

115. What packet types does OSPF include? (Multiple choice)

Link State DD

Hello

Link State Request

Database Description

116. Which of the following description about AS_PATH is wrong?

When there are two or more routes to the same destination in the router, these routes can compare the advantages and disadvantages of each other through this attribute, and the path with the longer AS_ PATHA is super-priority

AS_PATH refers to the list of ASs experienced by BGP routes in the transmitted path

BGP will not accept the route that contains this AS Number in the AS_PATH property

AS_PATH is a recognized mandatory attribute in BGP

117. The networking shown in the figure, SWA, SWB, SWC and SWD run RSTP, which of the following statements is correct? (Multiple choice)

After the edge port receives the BPDU, it will re-participate in the calculation of the spanning tree

After being configured as an edge port, the interface can quickly enter the forwarding state

The edge port can be enabled on the GE0/0/2 port of the SWB, so that the interface connected to the terminal can quickly enter the forwarding state

The edge port can be enabled on the GE0/0/2 port of the SWC, so that the interface connected to the terminal can quickly enter the forwarding state

118. Whether a non-edge port moves to the forwarding state is one of the criteria for RSTP to detect topology changes.

TRUE

FALSE

119. There can be multiple nodes under a Route-Policy, and different node numbers are identified by node numbers, and the relationship between different nodes is an "or" relationship.

TRUE

FALSE

120. The following is part of the output information of the router RTD. Which of the following description of the output information is wrong?

<RID>display igmp-snooping IGMP Snooping Information for VLAN 3

IGMP Snooping is Enabled

IGMP IP Version is Set to default 2

IGMP Query Interval is Set to default 60

IGMP Max Response Interral is Set to default 10

IGMP Robustress is Set o default 2

IGMP Lase Weniber Query Interval is Set to defauit 1

IGMP Router Port Aging Interval is Set to 180s or holdtime in hello

The version of the IGMP message that can be processed in VLAN3 is the default value

The display igmp-snooping command is used to view the IGMP Sooping configuration information on the VLAN

The maximum response time of IGMP in VLAN3 is the default value, which is 60 seconds

IGMP Snoping of VLAN3 is enabled

Page 13 of 29

121. Which function does the switch control plane not include?

Business processing

Routing operation

System loading

Traffic Statistics

122. Which of the following descriptions about the characteristics of routing policies is wrong?

It can save system resources by controlling the size of the routing table of the router

By modifying routing attributes, network data traffic can be reasonably planned to improve network performance

Can modify routing attributes, but cannot change the path through which network traffic passes

It can improve the security of the network by controlling the receiving, publishing and importing of routes

123. Which of the following attributes may not be included in the Update message of a BGP route? (Multiple choice)

AS_Path

Local_Preference

0rigin

MED

124. When performing network troubleshooting, if it is necessary to confirm the service traffic path, which of the following tasks may be required? (Multiple choice)

Confirm the data link layer service traffic path

Confirm the network layer business traffic path

Investigate service traffic path planning in the network design phase

Confirm the frequency of failure

125. Which description of the LACP protocol is correct? (Multiple choice)

Based on IEEE802.3au standard.

Exchange information with the peer through LACPDU (LinkAggregationControlProtocolDataUnit)

The devices at both ends determine the active end according to the system LACP priority and system

The devices at both ends determine the active interface according to the LACP priority and interface ID of the passive interface

126. In different scenarios, RSTP provides different protection functions. Which of the following statement is wrong?

After the BPDU protection function is enabled on the switching device, if the edge port receives RST BPDU, the edge port will be set as a non-edge port, and the spanning tree calculation will be performed again

After the anti-TC-BPDU message attack function is enabled, the number of times the switching device processes TC BPDU messages within a unit time is configurable

The designated port with the root protection function enabled, its port role can only remain as the designated port

The designated port with root protection enabled, when the port receives a better RSTBPDU, the port will enter the Discarding state and no longer forward packets. If the port does not receive a better RST BPDU for a period, it will automatically return to the normal Forwarding state

127. Which of the following descriptions about the default security zones Trust and Untrust of the firewall is correct? (Multiple choice)

The security level of Untrust is 50

The security level of Trust is 85

The direction of accessing the Untrust zone from the Trust zone is the Outboud direction

The direction of accessing the Untrust area from the Trust area is the Inboud direction

128. When multiple ASBRs introduce the same external route into the same OSPF domain, use the external route type with metric-tvpe of 2 to avoid suboptimal paths.

TRUE

FALSE

129. iMaster NCE-Campus supports management of Huawei network devices through NETCONF, and supports management of third-party devices through SNMP.

True

False

130. A Layer 2 switch is a data link layer device that can identify the MAC address information in a data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table.

True

False

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131. The following is part of the configuration information of the router Huawei. Which of the description of the configuration information is wrong?

[HUAWEI] ip as-path-filter 2 permit_200_300

[HUAWEI]route-policy test permit node 10

[HUAWE]-route-policy] if-match as-path-filter 2

Define a Route-Policy named test, the node serial number is 10

Set the AS path filter with sequence number 2, allowing routing information to include AS200 and AS300

Node 10 of the Route-Policy references AS path filter 2 and defines an if-match clause

The Route-Policy can only be called in the OSPF process

132. BFD uses a three-way handshake mechanism when establishing and dismantling the BFD state machine to ensure that the systems at both ends are aware of state changes.

TRUE

FALSE

133. In WLAN networking, if an engineer finds that the AP starts abnormally, which of the following is not the reason for the failure?

The power supply does not support the PoE function

The power supply party fails

AP fails to go online

The output power of the power supply side is insufficient

134. What are the key components of building an IP wide-area bearer network solution together with Huawei NetEngine intelligent routers?

iMaster NCE-Fabric

iMaster NCE-IP

iMaster NCE-Campus

iMaster NCE-WAN

135. A route-policy can have multiple nodes, different node numbers are identified by seq-number, and the relationship between different seq-number parts is an "or" relationship.

TRUE

FALSE

136. The default time interval for sending BFD detection packets is:

100ms

1000ms

10s

137. As shown in the figure below, in order to allow PC1 to access PC2, please fill in the corresponding commands to the corresponding blanks.

trust

23.1.1.0

12.1.1.1

untrust

138. Regarding the BGP recognized arbitrary attribute, which of the following descriptions are correct? (Multiple choice)

It is not required to exist in the Update message, you can decide whether to add it to the Update message according to the specific situation

BGP routers may not recognize

Must be passed between BGP neighbors

BGP routers must be identified

139. The ACL configuration on a certain router is shown in the figure, so which of the following items are the addresses that satisfy this condition? (Multiple choice)

10.1.2.1/32

10.1.1.1/32

10.1.3.1/32

10.1.4.1/32

140. How does an IGMPv2 router maintain network segment group membership? (Multiple choice)

The router maintains a timeout timer for each group membership. If the receiver host is received, the timer is refreshed. If the timer expires, the group membership is deleted.

After receiving the eave message, the router immediately deletes the group membership

The router periodically sends a Query message, and the receiver host reports a Report message after receiving the Query message

The router will query for a specific group

Page 15 of 29

141. Which of the following statements about the characteristics of a high availability network are correct? (Multiple choice)

will not fail

Can not fail frequently

Once a failure occurs, the business can only be restored through manual intervention

Can recover quickly after a failure

142. A company often has employees who need to go on business trips, so they often need to remotely access the company's internal network for office work.

Which of the following technologies can achieve this requirement?

ISDN Dial-in

IPSec VPN

NPLS VPN

SSL VPN

143. The following is the BGP error output information of a router. The wrong description of this information is:

<HUAWEL>display bgp error

Error Type: Peer Error

Date/Time:2010-03-2211:40:39

Peer Address:10.1.1.2

Error lnfo Router-id conflict

Error Type shows the error caused by neighbor relationship error

The neighbor address of the router is 10.1.1.2

The cause of the error may be due to the wrong writing of the AS number of the peer

The error occurred at 11:40:39 on March 22, 2010

144. Regarding the OSPF multi-process description, the error is:

Multiple different OSPF processes can run on the same router, and they do not affect each other and are independent of each other

An interface of a router can only belong to one OSPF process

The routing interaction between different OSPF processes is equivalent to the routing interaction between different routing protocols

Different OSPF routers establish neighbors, and the process numbers must be the same

145. Which of the following IP address ranges are not multicast address ranges? (Multiple choice)

192.168.0.0~192.168.255.255

239.0.0.0~239.255.255.255

168.1.0.0~168.1.255.255

224.0.0.0~ 224.0.0.255

146. By default, the sending interval of BFD packets is ______ milliseconds, the receiving interval is ______ milliseconds, and the local detection is ______ times. (Please fill in Arabic characters)

147. Which of the following descriptions about the linkage between VRRP and interface status to monitor the uplink interface is wrong? (Multiple choice)

If it is not linked with the connection status, it will easily lead to traffic black holes

You can monitor the upstream interface by configuring the priority on the Backup device

You can monitor the uplink interface by configuring the priority on the Master device

When configuring and monitoring the status of the uplink interface, it can monitor whether the uplink interface and the uplink direct link are faulty at the same time

148. Which of the following reasons may cause the failure of the BGP neighbor relationship? (Multiple choice)

ACL filters TCP port 179

The router IDs of the neighbors conflict.

Use the Loopback interface to establish an EBGP neighbor relationship without configuring peer ebgp max-hop

The peer connect-interface is not configured when the Loopback interface is used to establish a neighbor relationship.

149. Which of the following descriptions about the difference between stacking and clustering is wrong? (Multiple choice)

Both stacking and clustering can improve resource utilization and reduce the complexity of network planning

The difference between stacking and clustering is that a stack of modular switches is called a stack, and a boxed switch is called a cluster.

Both stacking and clustering can be combined with link aggregation technology to easily build a highly reliable, loop-free campus network

Both stacking and clustering can combine multiple switches to logically virtualize into one switch

150. A company purchased a new network device. As a network administrator, what method is usually used to configure the device for the first time?

FTP

Telnet

SNMP

Console port login

Page 16 of 29

151. Regarding the BGP route announcement, which of the following descriptions is wrong? (Multiple choice)

Only routes learned from IGP can be advertised to other BGP neighbors

All BGP routes learned from all BGP neighbors are advertised to other BGP neighbors

Only the best route preferred by BGP can be announced to other BGP neighbors

By default, routes learned from IBGP are not forwarded to other IBGP neighbors

152. Which of the following descriptions about NSAP addresses in IS-IS are correct? (Multiple choice)

By default, a maximum of 3 area addresses can be configured in an IS-IS process

The NSAP address consists of two parts: IDP and DSP

In the NSAP address structure, the role of SEL is similar to the "protocol identifier" in IP, and SEL is 01 on IP

NSAP is the address used to locate resources in the OSI protocol stack, mainly used to provide the interface between the network layer and upper-layer applications

153. Which of the following descriptions about LSA and LSDB are wrong? (Multiple choice)

The LS sequence number field is used to detect old and duplicate LSAs

The combination of LS type and Link StateID jointly identifies an LSA

LSA is the smallest unit of LSDB

The LSage field in the LSA header indicates the remaining lifetime of the LSA

154. Which of the following description about IGMPv3 is wrong?

The control capability of the host is increased, not only the multicast group can be specified, but also the source of the multicast can be specified

Serving the SSM model

Response messages and query messages have different message structures from IGMPv1 and v2 versions

Allow the host to specify to receive certain multicast groups sent by certain networks

155. Which of the following parameters cannot be modified by the apply command of Route-Policy?

OSPF external route type

OSPF overhead

OSPF process ID

OSPF imports area types

156. The shortest path from the multicast source to the receiver is called the shortest path tree SPT.

TRUE

FALSE

157. When performing source NAT configuration and having no-pat configuration parameters, which of the following statements is correct?

Only the destination IP address is translated

Simultaneous source IP address and source port translation

Only source IP address translation is performed

Perform destination IP address and destination port translation

158. The prefix list can be used directly through the peer command in the deployment of BGP, without the need to pass Filter-Policy or Route-Policy.

TRUE

FALSE

159. Which of the following is not the role of a stack switch?

Master

Backup

Standby

Slave

160. When dual-link hot standby is configured in a WLAN group, the AP will establish CAPWAP links with the active AC and the backup AC respectively.

TRUE

FALSE

Page 17 of 29

161. Which of the following statements about IGMPv2 routers maintaining segment group membership are correct? (Multiple choice)

After receiving the Leave message, the router immediately removes the members of the group

The router queries for a specific group

The router maintains a timeout timer for each group membership

After the router sends a general group query message, all receivers need to respond within the maximum response time

162. What are the factors that cause traffic interruption after a network failure? (Multiple choice)

Fault Propagation Time

Routing Loops

Response time to a single device failure (table item update)

Fault detection time

163. In the Eudemon firewall, which of the following data flows are defined as the outbound direction? (Multiple choice)

Data flow from the Trust domain to the DMZ domain

Data flow from the Untrust domain to the DMZ domain

Data flow from the Local domain to the Trust domain

Data flow from Untrust domain to Local domain

164. If two Huawei routers establish a BFD session, and the sending interval of AR1 is 30 milliseconds, and the receiving interval is 40 milliseconds; the sending interval of AR2 is 40 milliseconds, and the receiving interval is 30 milliseconds. Which of the following statements about the post-negotiation time interval is correct?

After negotiation, AR1 sends at an interval of 40 milliseconds and receives at an interval of 40 milliseconds

After negotiation, AR2 sends at an interval of 30 milliseconds and receives at an interval of 40 milliseconds

After negotiation, AR1 sends at an interval of 30 milliseconds and receives at an interval of 30 milliseconds

After negotiation, AR2 sends at an interval of 40 milliseconds and receives at an interval of 30 milliseconds

165. In PIM-DM, the multicast data will be spread across the network periodically by default ( ) seconds. The main purpose of the periodic spread is to detect whether there are new members joining the group. (Please fill in the Arabic numerals)

166. Network administrator A wants to use ACL to match only the four routing entries 1, 3, 5, and 7 in the figure. How many ACL rules does network administrator A need to configure at least?

1 10.0.1.0/242 10.0.2.0/243 10.0.3.0/244 10.0.4.0/245 10.0.5.0/246 10.0.6.0/247 10.0.7.0/24

167. In a network environment, there are both switches running RSTP and switches running SIP, then the phenomenon that will appear in this network is: (Multiple choice)

If it is a Huawei switching device, RSTP will switch to STP mode. After the STP switching device is withdrawn from the network, the RSTP -running switching device can migrate back to the RSTP working mode

RSTP can interoperate with STP, but at this time RSTP advantages such as fast convergence are lost

RSTP and STP are not interoperable and will perform independent operations

If it is a Huawei switching device, the STP will switch to RSTP mode, and the switching device running RSTP can be configured to switch back to the RSTP working mode after the switching device is removed from the network.

168. There are many employees in a certain enterprise building, and they usually start to connect to the company's WLAN network in the lobby when they go to work. As each employee walks to their respective workstations, each person's mobile terminal roams through roaming to their respective network coverage areas.

In order to try to ensure that the IP address of each terminal is fixed, what is the recommended method?

Do not configure VLAN Pool, configure a static IP address for each mobile terminal

Configure VLAN Pool and configure Hash algorithm

Configure the VLAN Pool and configure the sequence algorithm

Configure VLAN Pool, any configuration algorithm

169. Type 7 LSAs are generally not allowed to be transmitted in the backbone area, but the suppress-forwarding-address command can be used to allow Type 7 LSAs to be transmitted in Area 0.

TRUE

FALSE

170. Regarding the LSA age field, which description is correct? (Multiple choice)

The unit of LSA age is seconds, and the LS age of LSA in LSDB increases with time

If the LS age of an LSA reaches LSRefreshTime (30min), the producer of this LSA needs to regenerate an instance of the LSA

The unit of LSA age is seconds, and the LS age of LSA in LSDB decreases with time

If the LS age of an LSA reaches LSRefreshTime (30min), any router can regenerate an instance of this LSA for this LSA

Page 18 of 29

171. The PIM protocol message is directly encapsulated by IP, the destination address is 224.0.0.13, and the IP protocol number is 103.

TRUE

FALSE

172. As a network administrator, which of the following protocols can be used for network device configuration? (Multiple choice)

LLDP

SNMP

NETCONF

SSH

173. Which of the following are the advantages of electing DR/BDR in the MA network? (Multiple choice)

No need for multicast packets to maintain neighbor status

Reduce Duplicate Traffic

Facilitate the synchronization of link states

OSPF neighbors can be established as long as TCP is reachable

174. The Local Preference attribute is used to judge the best route when the meteor leaves the AS. When multiple routes with the same destination address but different next hops are obtained through different IBGP peers, the route with the higher value of the Local_Preference attribute will be preferred

TRUE

FALSE

175. Through the following display commands, by which of the following you can judge whether the switch loop failure is caused?

[CE02]displaytrapbuffer Pleasecheckthenetworkaccessedtoflappingport

[CE02]displaycpu-usage

[CE02]displaycpu-defendstatistics

[CE02]displayinterfacebriefincludeup

176. The first 4 bits of the IP multicast address are fixed 1110, corresponding to the upper 25 bits of the multicast MAC address. Of the last 28 bits of the IP multicast address, only 23 bits are mapped to the MAC address, so 5 bits of address information are lost. The direct result is that 32 IP multicast addresses are mapped to the same MAC address.

True

False

177. When a port of a switching device running MSTP protocol receives a configuration BPDU, it will compare it with the global configuration message saved by the device. If the newly received configuration BPDU is better, the global configuration information saved by the switching device will be updated synchronously; otherwise, the configuration BPDU will be discarded.

TRUE

FALSE

178. As shown in the figure, in the MA network, if R1 must be the DR, R2 must be the BDR, and R3, R4, and R5 do not participate in the election, then the dr-priority of R1 is at most _______; the dr-priority of R2 is_ _______; the dr-priority of R3 is __________; the dr-priority of R4 is ________; the dr-priority of R5 is _________. (Please fill in the Arabic numerals)

179. Which of the following descriptions about the Options field in the DHCP message are correct? (Multiple choice)

The Options field consists of three parts: Type, Length and Value

Option 82 does not contain the MAC address of the relay device

Option 82 can contain up to 256 Sub-Options

Option 82 is called the relay agent information option, which records the VLAN ID of the switch port connected to the DHCP client

180. What is the process sequence of VLAN Pool assigning VLANs to terminals? (Multiple choice)

The terminal accesses from the divided VLAN

Determine the VLAN Pool and VLAN algorithm bound to the VAP

The terminal accesses the VAP

Assign VLANs to terminals according to the VLAN algorithm

Page 19 of 29

181. An autonomous system refers to an IP network with the same routing strategy under the jurisdiction of an entity.

Under normal circumstances, which of the following is the range of the 2- byte AS number?

0~65535

1~65536

1~65535

0~65536

182. As shown in the figure, it is a multicast network. Which of the following ports are multicast group member ports? (Multiple choice)

IF4

IF3

IF1

IF2

183. Which of the following options are available for the network type supported by the OSPF protocol? (Multiple choice)

Point-to-Multipoint

Point-to-Point

Broadcast

Non-Broadcast Multi-Access

184. The four routers run IS-IS and have established adjacency. The area numbers and router levels are marked in the figure. The link between R1 and R2 is a PPP link, and R2 is DIS. Which of the following statements is correct? (Multiple choice)

R2 sends the LSP to R3 and R4 in unicast mode

If R1 sends an LSP message, R2 needs to send PSNP for confirmation

R3 periodically sends CSNP to help achieve Level-2 LSDB synchronization

185. There is an existing wireless access controller as a DHCP relay. If the DHCP client cannot dynamically obtain an IP address, which of the following reasons may be the cause? (Multiple choice)

In the global view of the wireless access controller, the DHCP server function is not enabled

In the interface view of the wireless access controller, no dhcp select relay is configured

In the global view of the wireless access controller, no DHCP server group is bound

In the interface view of the wireless access controller, no proxy DHCP server is specified

186. Which of the following descriptions about OSPF DR/BDR is wrong?

Even if the dr-priority of the two directly connected routers is set to 255, there will still be DR and BDR elected between them

In the process of DR/BDR negotiation, the routers participating in the negotiation will think that they are BO

When the neighbor state is Init, DR/BOR will not be negotiated between routers.

If both DR/BDR elections fail, the neighbor status of both parties will remain in the 2-way state

187. What is the information security that reminds customers? (Multiple choice)

Reminder to update password

Reminder data copies

Reminder for eye protection

Reminder to organize accounts

188. Multiple BGP processes cannot be configured on a router.

True

False

189. Regarding the necessity of equipment software upgrade, which of the following options are correct? (Multiple choice)

New versions of the software continue to add new features

Ease of use continues to improve with new versions of the software

The stability of new versions of the software continues to improve

It is recommended to upgrade to the latest software version immediately

190. On the VRP platform, when we introduce OSPF routing to ISIS, if COST is not specified, the cost value will be set to 16 by default.

True

False

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191. What is the meaning of the display current-configuration | include vlan command?

Check the physical interface information bound under each VLAN

View all configurations containing the "VLAN" keyword

Check which VLANs are currently created

View the IP address of the VLANIF interface

192. Which of the following attack methods are fragmented packet attacks? (Multiple choice)

Syndropl attack

Huge number of fragment attacks

Huge offset attack

UDP Floodi attacks

Tear Drop: Attack

Smurf attack

193. Which of the following states represents the established connection between peers in BGP?

Open

Established

Active

Connect

194. Which of the following descriptions about the OSPF protocol is wrong?

There are four connection types described by Router-LSA: P2P/TransNet/StubNetl virtual link

Routing information is only allowed to be published between backbone areas and non-backbone areas, and routing information is not allowed to be directly published between non-backbone areas

Each OSPF router uses only one Router-LSA to describe the local active connection status belonging to an area

The Link State ID described in the third type of LSA is the router- id of the ABR

195. Which of the following descriptions about the OriginatorID attribute in BGP are correct? (Multiple choice)

OriginatorID is a recognized arbitrary attribute

If there are multiple RRs in As, the OriginatorID attribute is created by the first RR

When a route is reflected by RR for the first time, RR adds the OriginatorID attribute to this route to identify the originating router of this route

When other BGP Speakers receive this route, they will compare the received OriginatorID with the local RouterI

If the two IDs are the same, BGPSpeaker will ignore this route and do not process it.

196. The Hold time carried by BGP neighbor PeerA in Open is 90s, the Hold time carried by Peer in Open is 30s , and the time for PeerA and PeerB to send Keepalive messages after successful connection establishment is

30s

90s

Do not send Keepalive messages

10s

197. The two routers RA and RB are directly connected, but the OSPF neighbor relationship cannot be established. The result of packet capture is shown in the figure. According to the packet capture analysis, which of the following is the reason why the OSPF neighbor relationship cannot be established?

Inconsistent encryption methods

Do not belong to the same area

The Hello time interval does not match

MTU sizes are different

198. A certain router runs IS-IS, and its output information is shown in the figure. Which of the following statements is wrong?

The System-ID of the neighbor router is 0002.0200.2002

This router is DIS

The area code of this router is 49.0001

The Router System-lD is 0100.0000.1001

199. After dual-machine hot backup is configured, the primary and backup channels cannot be established. The information on the primary device cannot be normally backed up to the backup device, resulting in abnormal dual-machine hot backup. What is the possible cause of this failure? (Multiple choice)

The source IP address and source port number of the local end are inconsistent with the destination IP address and destination port number of the peer end.

The retransmission times and retransmission intervals of the active and standby service packets at both ends are inconsistent

The priorities of the two ACs are the same

The TCP channel is not established

200. Regarding the command description of OSP, which is wrong? (Multiple choice)

The difference between OSPF v2 and OSPF V3 interface configuration commands is that OSPF v2 can use the network command, while OSPF v3 can be directly enabled on the interface

The stub router command is used to configure the secondary router as a Stub router, and the stub router can form a neighbor relationship with a non- stub router

There is no need to use router-id in OSPF v3 configuration, the configuration method is the same as OSPF v2

The no-summary parameter is configured for the stub area and the totally stub area

Page 21 of 29

201. A BGP router can send incremental BGP routing updates or perform periodic updates.

TRUE

FALSE

202. Which of the following reasons may cause hosts in the same VLAN on the LAN to be unable to communicate with each other? (Multiple choice)

The interface is artificially shut down or physically damaged

Switch MAC address learning error

Port isolation is configured on the switch

Wrong port and MAC address binding are configured on the switch

203. Which of the following is correct about IP address planning? (Multiple choice)

The IP address in the same network must be unique, but after the VPN is established, there will be no conflict between the overlapping IP addresses of the local and remote networks

Select continuous address blocks during address planning to facilitate route summary later

There must be a margin for address allocation at each level, so that the continuity required for address summary can be guaranteed when the network scale expands

When planning the IP address, you can set a specific function bit to give a certain meaning to the IP address

204. Which of the following descriptions about IGMP Proxy are correct? (Multiple choice)

IGMP Proxy can be deployed on a Layer 2 device between the IGMP querier and member hosts

The IGMP Proxy function cannot reduce the number of IGMP member leave messages received by the IGMP querier

The IGMP Proxy function can reduce the number of IGMP membership reports received by the IGMP querier

IGMP Proxy cannot be deployed on a Layer 3 device between the IGMP querier and member hosts

205. IS-IS protocol does not include which of the following types of Hello packets?

Level-1 LAN IIH

P2P IIH

Leve1-2 LAN IIH

P2MP IIH

206. As shown in the figure below, if the firewall receives a message from PC1 to PC2, which of the following statements is correct? (Multiple choice)

The message cannot match any security policy

The packet matches the security policy rule 1, and the firewall will forward the packet

There is no configuration source in the security policy rule2, and the security domain shows that it matches any security domain

The packet matches the security policy rule 2 and will be discarded by the firewall

207. Which of the following descriptions about the limitations of traditional traffic statistics is wrong?

Statistics cannot be collected for flows other than ACL rules

It needs to consume the interface of the equipment. For the ports that cannot be mirrored, it is necessary to purchase supporting equipment to access, and the cost is high

Based on the counting of IP packets, the statistical information is simple and cannot be counted for various information

Through the SNIP protocol for traffic statistics, it is necessary to continuously query the network management through polling, wasting CPU and network resources

208. The attacker sends an ICMP response request and sets the destination address of the request packet as the broadcast address of the victim network to achieve the attack purpose. So, which of the following attacks does this behavior belong to?

IP spoofing attack

Smurf attack

SYN flood attack

ICMP redirection attack

209. The LSDB output of a router R2 is shown in the figure. According to the analysis of the content in the figure, which of the following options is wrong?

Area boundary route aggregation exists in Area1

ASBR exists in Area 2, and the Router ID of ASBR is 6.6.6.6

R2 is deployed in the backbone area, and R2 is an ABR

There is no Stub area in the entire environment involved in the figure

210. Regarding BGP Local-Preference, which of the following descriptions are correct? (Multiple choice)

The default value of BGP route Local-Preference is 100

The default value of BGP routing Local-Preference is 0

In the BGP route selection rules, Preferred-value has a higher priority than Local-Preference, that is, Preferred-Value is compared preferentially

In the BGP route selection rules, the priority of MED is higher than that of Local-Preference, that is, priority is given to comparing MED

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211. To improve the reliability of RPs in a large network, deploy dynamic RPs. Please sort the dynamic RP election rules from high priority to low priority.

212. When creating a security zone in the USG firewall, which of the following is the default security priority?

The security priority is 100

The security priority is 5

The security priority is 85

The security priority is 50

When creating a new security area, if the security priority is not set, the security priority will be empty

The security priority is 0

213. What are the current popular wiring methods in data centers? (Multiple choice)

TOR

DOD

EOR

PHP

NSF

214. Which of the following descriptions about BGP, OSPF, IS-IS, and RIP is correct?

The port number used by the BGP neighbor relationship based on the UDP session is 179

RIP runs on the basis of UDP sessions, and the port number used is 520

IS-IS runs on the basis of the IP protocol, using the protocol number 89

OSPF runs on the basis of the IP protocol and uses the protocol number 88

215. Which of the following descriptions about Network-Summary-LSA is correct? (Multiple choice)

The Metric in the Network-Summary-LSA is set to the cost value from the ABR to the destination network segment

The Net mask in the Network-Summary-LSA is set to the network mask of the destination network segment

Network-Summary-LSA is generated by ASBR

The Link State ID in the Network-Summary-LSA is set to the IP address of the destination network

216. In the OSPF broadcast or NBMA network type, a device with a large DR Priority does not necessarily become a DR.

True

False

217. In the IS-IS broadcast network, which multicast MAC address does the Level-2 router use as the destination address for sending lH?

0180-c200-0016

0180-c200-0014

0180-c200-0015

0100-5E00-0002

218. Which of the following descriptions about the Master device in the VRRP protocol is wrong?

The Master device will immediately become the Backup when it receives a VRRP packet with the same priority as its own and the IP address of the local interface is smaller than the IP address of the peer interface.

When the Master device receives a VRRP message with a lower priority value than its own, it will immediately switch to Backup

The owner of the IP address in normal operation must be the Master device

Only the Master device will respond to the ARP request for the virtual IP address

219. Among the following BGP attributes, which ones are recognized and must be followed? (Multiple choice)

Next hop

AS_Path

origin

Community

Local_Pref

220. Which of the following statements about Layer 2 roaming and Layer 3 roaming is correct? (Multiple choice)

If the VLAN IDs associated with the front and back are the same when the STA roams, it must belong to Layer 2 roaming

Layer 2 roaming means that the client roams in the same subnet

Layer 3 roaming means that the client roams between different subnets

The VLAN on the AP service set associated with the STA must be the same before and after layer-3 roaming

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221. In SSM, which version of IGMP needs to be used?

IGMPv1

IGMPv3

IGMPv2 d. IGMPv4

222. The RSTP protocol provides a variety of protection functions. For example, when the edge terminal port is configured in the protection state, the processing method of the edge port after receiving the BPDU message is:

Forward BPDU messages as required

Obtain relevant information after the BPDU message

Close the port

Directly discard the BPDUmessage

223. Which of the following descriptions about configuring the dual-machine hot backup function in the WLAN network is wrong?

When dual-link hot backup is switched over, due to the long switching time, the business data forwarded by the tunnel will be interrupted during this period, and new users will not be able to go online, and the online users will not be able to roam.

When configuring dual-link hot backup, after the active AC completes the service configuration, execute the commit command to send the configuration to the AP, and then complete the configuration of the standby AC

When configuring dual-link backup, you need to use the commit command on the active AC to send the configuration to the AP after the active and standby ACs have completed the service configuration.

224. Execute the () saved-configuration command to clear the content of the configuration file used for the next startup of the device, and cancel the specified configuration file for the next startup of the system, so that the device configuration can be restored to the default value. (Please fill in the complete command, no abbreviation, and all lowercase English letters)

225. Router A and Router B are directly connected, OSPF is enabled and the port network type is broadcast. If the two routers establish an adjacency relationship, which of the following items are necessary? (Multiple choice)

The mask is consistent

Dead time interval is consistent

Dir-priority consistent

The MTU size is the same

The Hello time interval is the same

Router IDs are the same

226. Regarding the ABR in OSPF, which is the wrong description?

ABR cannot generate Type 3, Type 4, and Type 5 LSAs

Convert the Type 1 and Type 2 LSAs in the connected non-bone thousand areas into Type 3 LSAs and publish them to the backbone area

The Type 1, Type 2, and Type 3 LSAs in the backbone area of the ABR grid are converted into Type 3 LSAs and advertised to the connected non-bone thousand areas

There are multiple LSDBs on the ABR, and the ABR maintains an LSDB for each area

227. As shown in the figure, OSPF is enabled on all interfaces of the router, and the configuration of R1, R2, and R3 is shown in the figure, and a Type3 LSA with a Link State ID other than 0.0.0.0 will be generated. (Please fill in the device name, such as R1)

228. It is possible to prevent the HSB backup channel between the active and standby ACs from being interrupted and undetectable by sending active and standby service messages and retransmitting mechanisms.

True

False

229. The IPv6 address 2001:FC1A:8BAD:0112:0000:1200:0001/64 is abbreviated to 2001:FC1A:8BAD:112:0:1200::1/64.

TRUE

FALSE

230. Rapid detection technology can detect communication failures with adjacent equipment as early as possible, so that the system can take timely measures to ensure uninterrupted business.

True

False

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231. Which of the following protocols are multi-channel protocols? (Multiple choice)

SMTP

Telnet

323

FTP

232. As shown in the figure, the four Huawei switches have been running and configured with the MSTP protocol. Now it is necessary to set SW3 as the root bridge of Instance 10. Which of the following commands can be used to achieve this? (Multiple choice)

stp instance 10 root primary

stp vlan 10 root primary

stp instance 10 priority 4096

stp root primary

233. Among the following BGP attributes, which ones are recognized and must be followed? (Multiple choice)

WITH

Local_Pref

Next_hop

As-Path

234. Use the default-route-advertise command in OSPF to advertise the default route to the common OSPF area. When there is no default route in the area, use ____ to force the advertisement. (Please fill in lowercase English)

235. What parameters can the DHCPV6 server assign to the DHCPv6 client? (Multiple choice)

STP server address

DNS server address

Gateway address

IPv6 address prefixes

236. Which of the following are sources of demand for network optimization? (Multiple choice)

After long-term network maintenance, put forward relevant suggestions for some problems and improvement points summarized, and carry out centralized rectification

It is necessary to carry out video conferencing services in the network, and it is necessary to add switching equipment that supports Layer 2 multicast kinetic energy

The environmental problem of a weak electric well, the signal line is seriously aging, and needs to be replaced intensively

Enterprise information security needs, adding new security equipment

237. Which of the following are the mechanisms supported by both IGMPv2 and IGMPv3? (Multiple choice)

Specify source query

Members leave

Querier Election

Specific Group Queries

238. When configuring the multicast routing protocol, you first need to execute the () routing-enable command, and then configure the PFIM protocol. (Please fill in the complete command without abbreviation, and use all lowercase English letters).

239. Two Huawei devices R1 and R2 form a VRRP backup group. R1 is VRRPv2, and R2 is VRRPv3. Which of the following descriptions about the backup group is wrong?

After R2 configures the command vrrp version-3 send-packet-mode v2v3-both, it can exchange VRRP packets with R1

After R2 configures the command vrrp version-3 send-packet-mode v3-only, it cannot exchange VRRP packets with R1

After R2 configures the command vrrp version-3 send-packet-mode v2-only, it can exchange VRRP packets with R1

By default, R1 and R2 can exchange VRRP packets

240. Which of the following attributes cannot be directly referenced by the apply statement of router-policy?

commmunity

origin

ip-prefix

tag

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241. Which statements about the SYS indicator on the ARG3 device are correct? (Multiple choice)

Slow flashing green means the device is running normally

Red flashing means the system is starting

Red indicates system failure

Steady green light indicates that the device is running normally

242. Which of the following protocols is generally used in Smurf attacks?

TCP

ICMP

DHCP

BGP

243. Which of the following are documents to be handed off at the end of a structured network troubleshooting process? (Multiple choice)

Troubleshooting Process Documentation

Troubleshooting Summary Report

Change Backup and Maintenance Recommendations

User Communication Plan

244. Regarding LSA3, LSA4 and LSA5, the correct description is:

LSA5 will not change after passing through different areas, but LSA3 will change

LSA3, LSA4 and LSA5 will not change after passing through different areas

LSA3 will not change after passing through different areas, but LSA4 and LSA5 will change

LSA4 will not change after passing through different areas, but LSA3 and LSA5 will change

245. When a large number of IP phones and WLAN APs need to be accessed in the network, which function switch do we generally consider to choose?

A switch with STP edge port function

A switch with POE function

A switch with SACG function

A switch with QOS function

246. When troubleshooting the VRRP backup group flapping fault, you execute the vrrp vrid timer advertise command on the router to increase the interval for sending VRRP packets, and then repeatedly execute the display vrrp command on the Backup device to check the State field, and find that the information has remained unchanged. Which of the following statements about the above operation is correct?

The state of the Backup device may fluctuate due to the short interval for sending VRRP packets.

The state of the BackUp device may fluctuate due to the excessive time interval for sending VRRP packets

The vibration of the state of the Backup device has nothing to do with the interval between sending VRRP packets

The cause of the failure was not found, and the time interval needs to be restored

247. On Huawei switches, you can run the vlan batch command to create multiple VLANs in batches, which simplifies the configuration process.

True

False

248. The header of an IP packet is shown in the figure. Based on this packet, which of the following is correct?

The packet must be an IPsec VPN packet encapsulated with only AH

The protocol number is 51, which means that the message after the IP Header is the AH header

The protocol number is 51, which means that the message after the IP Header is the ESP header

The message is an IPsec VPI message, and the data part of the message is encrypted

249. R1, R2 , R3 and R4 run IS-S , and the DIS Priority of their interfaces is shown in the figure. If the devices start at the same time, () will be elected as D1S. (Please fill in the device name, such as R1)

250. Regarding the description of BCP message types and message characteristics, which is wrong?

HELLO messages are sent periodically between peers to maintain the connection

The OPEN message is responsible for establishing a neighbor relationship with the peer

NOTIFICATION messages are used to transmit error messages between BGP SPEAKERs

UPDATE messages are used to transfer routing information between BGP peers

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251. Router-LSA can describe different link types. Which of the following is not a Router LSA link type?

Link Type can be used to describe the virtual connection, that is, Vlink

Link Type can be used to describe the connection to the transit network, namely TranNet

Link Type can be used to describe the point-to-multipoint connection to another router group, namely p2mp

Link Type can be used to describe the connection to the peripheral network, namely SubNet

Link Type can be used to describe a point-to-point connection to another router, ie p2p

252. What does the project implementation plan mainly include? (Multiple choice)

Cutover process

Risk Control Measures

Staffing

Time planning

253. A certain router runs IS-IS and its output information is shown in the figure. Which of the following statements is correct? (Multiple choice)

The S4/0/0 interface of this router has established the neighbor relationship of Level1-1 and Level-2 at the same time

The S4/0/0 interface of this router only establishes the neighbor relationship of Level1-1

The GE0/0/0 interface of this router has established the neighbor relationship of Level1-1 and Level1-2 at the same time

The GE0/0/0 interface of this router only establishes the neighbor relationship of Level1-1

254. As shown in the figure, which of the following statements is correct?

GE0/0/1 on the SWA is the backup port

GE0/0/2 on the SWB is an Alternative port

SWB will be the root bridge

255. As shown in the figure, the router runs OSPF, and Area2 is a completely stub area. Please match the LSA types and area IDs contained in each area. (Drag and drop)

256. OSPF has five message types, please match the message types and functions

257. Which of the following statements about STP is correct?

The daily configuration of STP is mainly to control the position of the blocking port of the switch to ensure that it does not appear on the backbone links and backbone devices as much as possible.

Because the RSTP algorithm is simple and reliable, and the convergence speed is fast, so generally we will set all the switches in the network to work in RSTP mode

Similar to routing protocols, we generally use the method of modifying the link COST to adjust the data flow between switches

The slow convergence speed of STP causes network oscillation, so turning off STP is a better solution

STP is automatically run by default, so no configuration is required

258. In the VRP system, when the command ospf cost and bandwidth-reference are configured at the same time, the cost value on the interface is subject to the configuration of bandwidth-reference.

TRUE

FALSE

259. The only type of network that does not elect DR/BDR is the p2p type.

TRUE

FALSE

260. In BGP, MED is mainly used to influence BGP route selection between ASs. The smaller the MED attribute value is, the better the BGP route is. By default, the BGP MED value of Huawei devices is ( ). (Please fill in the Arabic numerals)

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261. As shown in the figure, RTA, RTB , RTC , and RTD are in the same AS and establish IBGP neighbor relationships through direct links . RTB and RTC are route reflectors, and RTA and RTC are route reflector clients of RTB. RTB and RTD are the route reflector clients of RTC. RTA announces 10.1.1.0/24 into BGP, and the BGP route received on RTD updates its Originator ID value to ()

262. To implement the traffic filtering function, you can use traffic-flter or MQC. Compared with traffic-filter, MQC can be called in more views.

True

False

263. The network administrator of a company checks the FIB of the router. What fields does the FIB contain? (Multiple choice)

TimeStamp

Protocol

Destination/Mask

Cost

264. Which of the following statements about the address used by AC to establish a CAPWAP tunnel in VRRP hot backup is correct?

The physical address of the primary AC

The physical address of the standby MC

Any address configured in the AC is fine

VRRP virtual addresses of the active and standby ACs

265. In the WLAN layer 3 networking scenario, the AP goes online and goes through the following stages, please sort them in order.

AP discovers AC through option 43

AP and AC establish a CAP7AP tunnel

The AP goes online, and the AC delivers the service configuration to the A

AP obtains IP address

266. Which of the following statements about OSPF and IS-IS is wrong?

Both OSPF and IS-IS are the link state protocols.

Both DR and BDR need to be elected in the broadcast network

Both OSPF and IS-IS use Hello packets to establish and maintain neighbor relationships

Both OSPF and IS-IS support area division

267. Which of the following understanding of DR/BDR is wrong? (Multiple choice)

The network address monitored by DR other is 2240.0.6

In a broadcast network, DR and BDR must be elected. Without either DR or BDR, the broadcast network cannot work properly

The multicast address that DR other monitors is 224.0.0.5

All DR other only establish adjacency with DR and BDR

268. From the topology shown in the figure and the configuration on the interconnection port of the switch, it can be judged that the data frame tagged with VLAN10 can be forwarded normally between the two switches.

True

False

269. RTA is the source DR router, and RIB is the RP router. The multicast source sends group blessing data to RTA, but the group blessing source Source registered with it through the PIMRegister message cannot be seen on the RIB. The possible reasons are as follows: (Multiple choice)

There is no single-finger route from RTB to RTA, which causes RIB to fail the RPF check of the source

The multicast network dynamically elects RP, but RTA fails to check the RPF of BSR

The RP elected by RTA is not RTB

The multicast network is statically configured with RP, but the RTA router is not statically configured with RP

270. Which of the following descriptions about the ACL matching mechanism are correct? (Multiple choice)

After the packet matches the ACL, only two results will be generated: "match" and "mismatch"

When the matching order of the ACL is the config mode, it will be matched in descending order of the serial number

When the packet matches the ACL, if the packet hits the rule and the ACL action is "permit", the matching result is "match". When the packet hits the rule and the ACL action is "deny", it returns The result is "does not match"

If the ACL exists but there is no rule inside the ACL, the result will be directly returned as "does not match"

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271. Which of the following descriptions about OSPF virtual connections is wrong?

The virtual connection is actually a logical channel

Virtual connections increase the complexity of the network

The area through which the virtual connection is configured must have all the routing information

The virtual link must be configured in two ASBRs

272. When troubleshooting MSTP, you executed the DISPLAY CURRENT-CONFIGURATION command to obtain the configuration file of the device. Which of the following statements is incorrect?

Check the port configuration and confirm whether the MSTP -enabled port has enabled the protocol message sending command, such as: BPDU ENABLE

Whether the port MSTP connected to the user terminal equipment is disabled or configured as an edge port

Regardless of whether BPDU TUNNL is configured on the device, it will not affect MSTP

Check whether the device port is added to the correct VLAN

273. Which of the following are the advantages of using stacking and clustering technologies to build a campus network? (Multiple choice)

The business interruption time is greatly reduced

Improve network equipment and link utilization

Simplifies network management and reduces the complexity of network deployment planning

Can effectively reduce network power consumption

274. Two hosts are connected to the same switch, and they belong to the same VLAN and the same network segment. Now the two hosts cannot ping each other. Which of the following are the possible reasons? (Multiple choice)

The host is configured with wrong static ARP

Port isolation is configured on the switch

The interface is artificially shut down or physically damaged

Wrong port and MAC address binding are configured on the switch

275. Which of the following descriptions of each field in the OSPF ASBR-Summary-LSA message is wrong?

The Advertising Router field indicates the ABR that generated the LSA

The Advertising Router field in the ASBR-Summary-LSA of all areas is the same

Link State ID indicates the Router ID of ASBR

Metric indicates the OSPF cost of the ABR reaching the ASBR

276. By default, which of the following is the MED attribute value in Huawei equipment BGP?

180

100

277. Multiple spanning trees can be generated in an MST domain, and each spanning tree is called an MSTI. Among them, MSTI is identified by Instance ID, and the value of Huawei equipment is 0~32768.

TRUE

FALSE

278. Check the LSP on a router and see the following results:

Which of the following statements is correct?

When sending a data packet whose destination address is 3.3.3.3, label it with 1026 and send it.

When sending a data packet whose destination address is 4.4.4.4, send it directly without labeling.

When the router receives a packet with a label of 1024, it will change the label to 1027 and send it.

When sending a data packet whose destination address is 2.2.2.2, send it directly without labeling.

279. The BGP protocol uses the beer default-route-advertise command to advertise default routes to neighbors, so which of the following descriptions about changes in the local BGP routing table is correct?

Generate an active default route in the local BGP routing table and deliver it to the P routing table

Generate an inactive default route in the local BGP routing table, but not send it to the P routing table

Generate a default route in the local BGP routing table, and send it to the P routing table according to the routing selection result

No effect, no default route is generated in the local BGP routing table

280. The connection between Site_1 and Site_2 is shown in the figure. According to the configuration analysis in the figure, when a data packet is sent from Site1 to Site_2, the Destination IP address in the Delivery Header of the packet after R1 encapsulation is ( ). (Please fill in the dotted decimal IP address, do not fill in the mask. Such as 192.168.0.1)

Page 29 of 29

281. Which of the following fields are included in the 0SPF Hello packet? (Multiple choice)

Originating router interface authentication type and authentication information

Area ID of the originating router interface

Hello interval of the originating router interface

Router ID of the originating router

The MAC address of the originating router interface Router ID of

DR and BDR

282. Which protocol modules can BFD detection be linked with? (Multiple choice)

OSPF

VRRP

BGP

Static routing

283. Stacking: refers to connecting two or more switches to each other through a dedicated connection cable. For example, to connect two switches, you can directly connect the UP-stacking port of one stacking switch to the DOWN stacking of another stacking switch. ports to expand the number of ports on a single switch.

TRUE

FALSE

284. Both policy routing and routing policy can affect the forwarding process of data packets, but they affect data packets in different ways. Policy routing is policy-based forwarding based on the forwarding plane. Routing policies are based on the control plane and serve routing protocols and routing tables.

True

False

285. ASPF technology enables the firewall to support multi-channel protocols such as FTP, and can also formulate corresponding security policies for complex applications.

TRUE

FALSE

286. L2TP has many different scenarios, so which of the following is not a scenario of L2TP?

Client-Initiated

Call-LNS

NAS-Initiated

Client-Client

287. Regarding the basic concept of link aggregation, which of the following description is wrong?

Link aggregation is a method of bundling a group of physical interfaces together as a logical interface to increase bandwidth and reliability.

Link aggregation follows the IEE802.3ad protocol.

The logical link formed by bundling several physical links together is called a link aggregation group (LAG or Trunk)

Link aggregation only exists on active interfaces

288. Which routes in the following options meet the following ACL conditions? (Multiple choice)

[HUAWEI] acl number 2001

[HUAWEI-acl-basic- 2001] rule 0 permit source 10.1.1.0 0.0.254.255

10.1.2.1/32

10.1.3.1/32

10.1.1.1/32

10.1.4.1/32

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