Huawei Huawei Certifications H12-821 Questions & Answers

• Question 11:

  OSPF supports area authentication and interface authentication. If both authentication modes are configured, Interface authentication takes preference over area authentication.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 12:

  As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?

  

  A. Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.

  B. After a port is Configured as an edge port, the port can quickly enter the Forwarding state.

  C. You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.

  D. You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.

  Correct Answer: B

• Question 13:

  Which of the following attribute must be carried in an Update message?

  A. Local-pref

  B. Prefval

  C. MED

  D. AS-Path

  Correct Answer: A

• Question 14:

  Compared with STP, RSTP defines the different port states. Which of the following statements regarding discarding and learning states are true?

  A. The port In discarding or learning state does not forward data frames.

  B. The port in discarding state does not learn MAC addresses table.

  C. The port in discarding or learning state does not learn MAC addresses

  D. The port In learning stole docs not learn MAC addresses table.

  Correct Answer: C

• Question 15:

  After which of the following parameters are modified does an IS-IS neighbor relationship need to re-established?

  A. The cost of an IS-IS interface is changed.

  B. The IP address of an ISIS interface is changed.

  C. The level of an ISIS interface is changed.

  D. The interval at which an IS-IS interface sends IIH packets is changed.

  Correct Answer: C

• Question 16:

  In BGP, the origin attribute of the routes imported using the import-route command is incomplete.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 17:

  Which of the following statements is false, based on the following IGMP information on an interface of RTA?

  

  A. The interval for sending group-specific Query messages is 60s.

  B. The maximum time for response to Query messages is 10s.

  C. The IP address of the interface is 192.168.1.1.

  D. The IGMP version is IGMPV2.

  Correct Answer: B

• Question 18:

  Which of the following statements regarding BGP route advertisement are false?

  A. All the BGP routes learned from all BGP peer will be advertised to other BGP peers.

  B. Only the optimal routes preferred by BGP can be advertised to other BGP peers.

  C. By default, the routes learned from an IBGP peer will not be forwarded to other IBGP peers.

  D. Only the routes learned from IGPs can be advertised to other BGP peers.

  Correct Answer: B

• Question 19:

  An engineer sets the CAPWAP heartbeat detection interval to 20 of the active link before an active/standby switchover occurs?

  A. 75s

  B. 20s

  C. 60s

  D. 90s

  Correct Answer: B

• Question 20:

  Which of the following statements regarding an IP prefix are true?

  A. An IP prefix filter is used to filter IP address prefixes and cannot match an IP prefix number and a prefix length at the same time.

  B. An IP prefix filter cannot be used to filter data packets.

  C. An IP prefix filter is used to filter IP address prefixes and can match an IP prefix number and a prefix length at the same time.

  D. An IP prefix filter can be used to filter data packets.

  Correct Answer: D