Huawei Huawei Certifications H12-891 Questions & Answers

• Question 171:

  In EPIM-SM, the following description of the PIM Join message is correct?

  A. PIM Join messages are sent every 3 minutes, and status

  B. PIM Join messages for the multicast tree are only sent when the multicast tree is first established

  C. The PIM Join message is sent every 60 seconds to refresh the status of the upstream router mroute for the multicast tree

  D. The upstream router sends a PIM Join acknowledgment in response to each PIM Join message received from the downstream router

  Correct Answer: C

• Question 172:

  View the details of all VPN instances on a network device and the results are as follows, which of the following statements is wrong?( Multiple choice questions).

  

  A. The total number of instances that enable the IPv6 address family in the VPN configured on this side is

  1 .

  B. VPN-Instance vpna does not receive VPN routes with an RT of 2:1.

  C. The GigabitEthernet 1/0/0 interface is tied to the VPN-Instance vpna

  D. The device assigns a label to each route of the VPN-Instance vpna.

  Correct Answer: AD

• Question 173:

  Which of the following options is described correctly for the assertion mechanism?( Radio).

  A. Winner's election process does not make IP address size a condition of the election

  B. In the assertion mechanism, the winner is responsible for forwarding multicast data to the broadcast segment

  C. The assertion mechanism is used for the election of DR

  D. In the assertion mechanism, the loser will shut down the interface with the broadcast network necklace

  Correct Answer: B

• Question 174:

  As shown in the figure,

  

  all interfaces of the router have OSPF turned on, and the COST value of the link is identified in the figure. R2's loop backO interface advertises a cost in region l, then R1 reaches 10022/32 The value is

  A. 200

  Correct Answer: A

• Question 175:

  Regarding BGP's recognized arbitrary attributes, which of the following descriptions is correct?

  A. must be passed between BGP neighbors

  B. All BGP routers must be recognized

  C. There is no requirement to be present in the Update message, and you can decide whether to add it to the Update message on a case-by-case basis

  D. The BGP router cannot recognize the

  Correct Answer: BC

• Question 176:

  In 0SPFv3 , Router-LSA is generated by each router, which describes the interface address and cost of each link of the router, and also includes the RouterlD of the neighbor router

  A. True

  B. False

  Correct Answer: B

• Question 177:

  The multicast IP address is 2291301301, and its corresponding MAC address is :(Multilist)

  A. 01-00-5E-O2-82-01

  B. 01-00-5E-82-82-01

  C. 00-00-5E-02-82-01

  D. 00-00-5E-82-82-01

  Correct Answer: A

• Question 178:

  The following description of the Layer 6 functionality in the OSI reference model is correct?

  A. Synchronous communication

  B. Establishing, maintaining, and terminating communication sessions

  C. Provides a common data compression and encryption scheme

  D. Determines the availability of resources

  Correct Answer: C

• Question 179:

  The command to configure VRRP preemption delay is ?

  A. vrrp vrid 1 preempt-mode timer delay 20

  B. vrrp vrid 1 preempt-delay 20

  C. vrrp vrid 1 preempt-timer 20

  D. vrrp vrid 1 timer delay 20

  Correct Answer: A

• Question 180:

  Which of the following VPN technologies may have two IP message headers in one message?

  A. GOES

  B. SSL VPN

  C. IPsec VPN

  D. L2TP

  Correct Answer: ACD