Huawei H12-831 Online Practice Questions and Exam Preparation

Huawei H12-831 Online Questions & Answers

• Question 251:

  On the OSPF network shown in the figure, a network engineer finds that R1 and R2 have the same router ID, and both have imported default routes (with the default-route-advertise always command configured). Given this, which of the following statements is false?

  

  A. R2 and R4 can establish a neighbor relationship.
  B. R1 and R2 can establish a neighbor relationship.
  C. R1 and R3 can establish a neighbor relationship.
  D. A routing loop may occur between R3 and R4.
  B. R1 and R2 can establish a neighbor relationship.

• Question 252:

  After port isolation is configured on a switch, hosts in the same VLAN cannot communicate with each other at Layer 2 or Layer 3 by default.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 253:

  A router's Network LSA is shown in the figure. Which of the following statements is correct? display ospf Isdb network self-originate OSPFProcess1 with Router ID 10.0.12.2 Area: 0.0.0.0 Type: Network Lsid: 10.0.122 Advrtr: 10.0.12.2 Ls age: 824 Len: 32 Options : E

  \seq#:80000002 1chksum : 0x8970 INet mask: 255.255.255.0 IPriority : Low IAttached Router 10.0.12.2 .Attached Router 10.0.12.1

  A. by the routerDRpriority is100
  B. of this routerRouter IDfor10.0.12.2
  C. The network segment where the router is located is10.0.12.0 24
  D. This router isDR
  B. of this routerRouter IDfor10.0.12.2
  C. The network segment where the router is located is10.0.12.0 24
  D. This router isDR

• Question 254:

  Which of the following statements about IPSG is false?

  A. IPSGcan preventIPaddress spoofing attack
  B. IPSGis a source based on a three-layer interfaceIPaddress filtering technology
  C. IPSGcan be turned onIPPacket inspection alarm function, linked with the network management to alarm
  D. able to passIPSGPrevent the host from changing privatelyIPaddress
  B. IPSGis a source based on a three-layer interfaceIPaddress filtering technology

• Question 255:

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

• Question 256:

  To prevent hackers from attacking user devices or networks through MA, C addresses, you can configure the MA, C addresses of untrusted users as black hole MA, C addresses to filter out illegal MA, C addresses.

  A. True
  B. False
  A. True

• Question 257:

  On the network shown in the figure, a network engineer finds that the path between PC1 and PC2 is not the optimal path, and all links along the path have the same cost. Given this, which of the following routers may be the root bridges of the Layer 2 network?

  

  Options:

  A. SW2
  B. SW1
  C. SW4
  D. SW3
  B. SW1
  C. SW4

• Question 258:

  In the same environment, engineers A and B execute the tracert command. The destination addresses are the same, but the paths are different. What are the possible reasons?

  

  A. The phenomenon is abnormal, the device has an operating system failure
  B. Engineer A's operation error
  C. Engineer B's operation error
  D. The destination port numbers of the UDR packets serving tracert are different, and the hashes reach different equivalent next hops.
  D. The destination port numbers of the UDR packets serving tracert are different, and the hashes reach different equivalent next hops.

• Question 259:

  The OSPF protocol is run between CE and PE, when CE1 advertises the route of its site to CE2. Which of the following descriptions is incorrect?

  A. WhenPE2receivePE1sentBGProutedDomain IDcorrect for all when different from localLSA. PE2will generateType5LSAorType7 LSA
  B. WhenPE2receivePE1sentBGProutedDomain IDWhen the same as local, forTypel LSAandType2LSA. PE2will generateType3 LSA
  C. WhenPE2receivePEIsentBGProutedDomain IDSame as local forType3 LSA. PE2will generateType5 LSA
  D. PEIconfiguredDomain IDcan be used asBGPThe extended community attribute of is sent with the route toPE2
  C. WhenPE2receivePEIsentBGProutedDomain IDSame as local forType3 LSA. PE2will generateType5 LSA

• Question 260:

  When 0SPFV2 evolves to 0SPFV3, the LSA format and function are exactly the same, but the network layer in the LSA address from IPv4 to IPv6.

  A. True
  B. False
  B. False