Huawei Huawei Certifications H12-831 Questions & Answers

• Question 111:

  From this figure, we can conclude that

  

  A. R4not anyIS-ISNeighbor

  B. R4andee8c.aOc2.baf3establishedIPv4,IPv6ofIS-ISNeighbor

  C. R4andee8C. aOe2.baf3only establishedIPv6ofIS-ISNeighbor

  D. R4andee8c.aOc2.bat3only establishedIPv4ofIS-ISNeighbor

  Correct Answer: B

• Question 112:

  In BGP/MPLS IP VPN, the 0SPF multi-instance process uses the DN bit to prevent Type5 LSA loops.

  A. True

  B. False

  Correct Answer: B

• Question 113:

  An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between the two devices, which of the following Is a statement wrong?

  

  A. The Next_Hop attribute must be an IPv6 global unicast address when routing

  B. BGP4+ transmits routing information between peers through Update packets

  C. If the MP_REA, CH_NLRI attribute is carried in the Update packet, it indicates that the advertisement is a reachable route

  D. When the route is transmitted, it will carry recognized mandatory attributes such as AS_Path

  Correct Answer: A

• Question 114:

  If faced with a complex network failure, and it is estimated that the troubleshooting cannot be completed in a short period of time, and the user urgently needs to restore the availability of the network, then the correct approach is.

  A. Tell the user it's not possible

  B. Directly build an alternative network environment without notifying customers

  C. Always try to troubleshoot without informing the user of the current troubleshooting difficulty

  D. Communicate with users whether it is possible to skip the faulty node and build an alternative network environment

  Correct Answer: D

• Question 115:

  The rollback operation of project cutover can be temporarily determined according to the situation during cutover, and no advance plan is required.

  A. True

  B. False

  Correct Answer: B

• Question 116:

  To speed up the detection of link failures in an IS-IS network, you can associate IS-IS with BFD.

  A. True

  B. False

  Correct Answer: A

• Question 117:

  As shown in the figure, in a medium-sized network, BGP generally deploys dual RRs to improve R reliability. When deploying dual RRs, the ClusterIDs of the two RRs are generally set to be the same. What is the reason for this?

  

  A. Prevent RR from receiving too many routes and causing insufficient memory

  B. prevent suboptimal

  C. prevent loops

  D. Prevent the client from receiving too many routes and causing it to run out of memory

  Correct Answer: A

• Question 118:

  As shown below:

  

  A. area. have8indivualMAThe internet

  B. area. have4indivualMAThe internet

  C. area. have4router

  D. area. have8router

  Correct Answer: BC

• Question 119:

  When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?

  A. existCEIn the case of multi-homing, enableBGP ASThe number substitution function may cause routing loops that can be passed throughBGP SoDpreventVPNIntra-site routing loops

  B. whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

  C. existHubandSpokescene, whenHub-CEandHub-PEuseIGPTimeSpoke-PEandSpake- CEcannot makeEBGP

  D. whenPEandCEbetweenBGPWhen exchanging routing information, you do not need toPEPerform private network route import on theBGPoperation

  Correct Answer: B

• Question 120:

  To ensure security, authentication can be configured in the OSPFV3 process area view.

  A. True

  B. False

  Correct Answer: A