Huawei Huawei Certifications H12-831 Questions & Answers

• Question 251:

  The input information of a router is as follows. Which of the following causes the OSPF adjacency cannot be established normally?

  

  A. Area code does not match

  B. Inconsistent area type

  C. interfaceIPInconsistent address masks

  D. Hell. Inconsistent message sending interval

  Correct Answer: AD

• Question 252:

  As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?

  

  A. 100

  B. 150

  C. 50

  D. 200

  Correct Answer: D

• Question 253:

  Which LSAs in OSPFv3 can be flooded in an area?

  A. Link-LSA

  B. Inter-Area-Router-LSA

  C. Inter-Area-Prefix-LSA

  D. Intra-Area-Prefix-LSA

  Correct Answer: D

• Question 254:

  Which of the following sequences can be matched by the regular expression 100.S?

  A. 100

  B. 1000

  C. 10000

  D. 1001

  Correct Answer: BD

• Question 255:

  As shown in the figure, the network has a loop because STP is not enabled. Which of the following phenomena may be bowed?

  

  A. Hostreceive a large number of broadcasts

  B. The device will generate a loop alarm

  C. equipmentCPUOccupancy is too high

  D. MA, CAddress table flapping

  Correct Answer: ABCD

• Question 256:

  As shown in the figure, OSPF is enabled on all interfaces of the router. Which of the following statements is correct?

  

  A. R2in the area0generated inTypel LSAcontains10.0.2.2/32routing information

  B. R2in the area0generated inType5 LSAcontains10.0.2.2/32routing information

  C. R2in the area0generated inType2 LSAcontains10.0.2.2/24routing information

  D. R2in the area0generated inType3 LSAcontains10.0.2.2/32routing information

  Correct Answer: A

• Question 257:

  Regarding the label space of MPLS, the description is wrong:

  A. penultimate jumpLSRWhen performing label exchange, if the exchanged label value is found to be3,By default, the label is popped and the message is sent to the last hop

  B. 1024Above areLDP,RSVP-TE. MP-BGPLabel space shared by other dynamic signaling protocols

  C. 16~1023is staticLSPand staticCR-LSPshared tab space

  D. If the out tag value is0,The router will directly discard the packet

  Correct Answer: D

• Question 258:

  Regarding multi-instance CE (Mlulti-VPN-Instance CE, MCE), which of the following descriptions is wrong?

  A. existMCEdevice needs to be differentVPNCreate their own routing table and bind to the correct interface

  B. connected to the sameMCEbut not oneVPNInstance users cannot access each other

  C. haveMCEfunctional devices can be found inBGPIMPLS IP VPNAccess to multiple applicationsVPNExample, reduce the investment of user network equipment

  D. MCEandPEThere must be multiple physical links betweenVPINIsolation between instances

  Correct Answer: D

• Question 259:

  When MPLS is deployed in the network and the network layer protocol is IP, the route corresponding to the FEC must exist in the IP routing table of the LSR, otherwise the label forwarding entry of the FEC will not take effect.

  A. True

  B. False

  Correct Answer: A

• Question 260:

  What characteristics must a high-risk operation plan have?

  A. with verification

  B. Strong operability

  C. accurate

  D. can return

  Correct Answer: ABCD