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Question 1:

BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?

A. 4784

B. 3784

C. 5784

D. 2784

Correct Answer: A


Question 2:

In the OSPF protocol, inter-area route calculation involves only Router LSA, Network LSA, and Summary LSA.

A. TRUE

B. FLASE

Correct Answer: A


Question 3:

Which of the following statements regarding OSPF route summarization is false?

A. OSPF supports two route summarization modes: ABR summarization and ASBR summarization.

B. Any router in OSPF can summarize routes.

C. Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.

D. Route summarization can reduce routing information, decrease the routing table size, and improve router performance.

Correct Answer: D


Question 4:

As shown in the following figure, a new AP is deployed In dual link MSB networking (load balancing mode). Which AC will the connect to?

A. AC1

B. Random access

C. None

D. AC2

Correct Answer: C


Question 5:

Which of the following is the default interval at which the DIS on a broadcast IS_IS network sends CSNPs.

A. 30

B. 3.3

C. 10

D. 40

Correct Answer: C


Question 6:

To inject IGP routes into BGP routes, you can only use the network command.

A. TRUE

B. FALSE

Correct Answer: B


Question 7:

Which of the following statement regarding the display ospf peer command output is true?

A. Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.

B. Through negotiation during DD packet exchange, the local end becomes the slave.

C. Router ID indicates that the local router ID Is 10.1.1.1.

D. The DR address is 10.1.1.1

Correct Answer: A


Question 8:

A switch runs MSTP. The configuration is shown in the figure. What is the role of this switch in MSTI 1?

A. Uncertain

B. Root switch

C. Non-root switch

D. Secondary root switch

Correct Answer: A


Question 9:

The filter-policy 2000 export command is run in an ISIS process. Which of the following statements about the functions of a filter policy is false?

A. Is used together with the route import function to advertise some imported external routes to neighbors.

B. If this command is not run, the device by default advertises all routes that ISIS Imports form external routing protocols.

C. Controls the advertisement of routes generated by the device.

D. Filters LSPs to be advertised.

Correct Answer: B


Question 10:

To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.

A. TRUE

B. FALSE

Correct Answer: A


Question 11:

Which of the following statements regarding DR/BDR are false?

A. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.

B. DR others listen on the multicast address 224.0.0.5.

C. All DR others establish neighbor relationships with DR and BDR only.

D. DR others listen on the network address 224.0.0.6.

Correct Answer: C


Question 12:

Which of the following statements regarding the firewall zone security level is false?

A. The configured security level cannot be changed.

B. Two zones cannot be configured with the same security level.

C. The default security level of the new zone is 1.

D. Only the security level of the user-defined zone can be configured.

Correct Answer: A


Question 13:

Which of the following PIM protocol packets have unicast destination addresses.

A. Register Stop

B. Bootstrap

C. Graft

D. Assert

Correct Answer: C


Question 14:

Which of the following statements regarding the LSA age field are true?

A. The unit of this field is seconds. In a LSDB, the LS age of a LSA increases with time.

B. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), any router can regenerate an instance of this LSA again.

C. The unit of this field is seconds. In a LSDB, the LS age of a LSA decreases with time.

D. If the LS age of a LSA has reached the LSRefreshTime (30 minutes), the originator of this LSA needs to regenerate an instance of this LSA again.

Correct Answer: C


Question 15:

The traffic limiting policy feature only supports the number of connections initiated by the specified IP or the number of connections received.

A. TRUE

B. FALSE

Correct Answer: B