Huawei Huawei Certifications H12-821 Questions & Answers

• Question 41:

  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 42:

  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 43:

  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 44:

  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 45:

  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 46:

  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 47:

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

  A. Register Stop

  B. Bootstrap

  C. Graft

  D. Assert

  Correct Answer: C

• Question 48:

  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 49:

  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 50:

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

  A. TRUE

  B. FLASE

  Correct Answer: A