H12-821

H12-821 practice questions, page 5 of 14, with answer review and explanations.

Question 21

The following is part of configuration on the router. Which of the following statements regarding the configuration is true? [HUAWEI]ip ip-prefix pl permit 10.0.192.0 8 greater-equal 17 less-equal 18

  1. In the 10.0.192.0/8 network segment, a route with a mask length of 18 matches the prefix list, and behavior for the matching routes is permit.
  2. In the 10.0.192.0/8 network segment, a route with a mask length of 20 matches the prefix list, and behavior for the matching routes is permit.
  3. In the 10.0.192.0/8 network segment, a route with a mask length of 19 matches the prefix list, and behavior for the matching routes is permit.
  4. In the 10.0.192.0/8 network segment, a route with a mask length of 21 matches the prefix list, and behavior for the matching routes is permit.

Question 22

The Rapid Spanning Tree Protocol (RSTP) defines four port roles. The Flags fields indicating the alternative and backup port roles in RST BPDUs are the same, that is, 01.

  1. TRUE
  2. FALSE

Question 23

A source tree is the shortest path from a multicast source to receiver hosts, it is also called a shortest path tree (SPT).

  1. TRUE
  2. FALSE

Question 24

This is part of output information on router Huawei. Which of the following statements regarding the output information is false?

  1. The group address is 225.0.0.0.
  2. The display pim rp-info command displays RP information for a multicast group.
  3. The RP address is 2.2.2.2.
  4. The RP priority is 0.

Question 25

The following is part of output information on router Huawei. Which of the following statements regarding the output information is false?

  1. The DR address on the interface is 10.1.1.1.
  2. GigabitEthernet 1/0/0 of the router runs PIM-SM.
  3. The PIM status on GigabitEthernet 1/0/0 of the router is Up.
  4. GigabitEthernet 1/0/0 of the router runs PIMv2.