Huawei Huawei Certifications H12-831 Questions & Answers

• Question 121:

  BGP/MPLS IP VPNs can only use LDP to construct public network tunnels.

  A. True

  B. False

  Correct Answer: B

• Question 122:

  Which of the following is not part of the preparatory work for the cutover plan?

  A. field defense

  B. Cutover target

  C. Root description of the current network

  D. risk assessment

  Correct Answer: A

• Question 123:

  All routers in a network run IS-IS, and all are in Area 49.0001, where the L SDB of R1 is shown in the figure

  According to this, it is judged that the DIS of Level-2 is. (Please fill in the device name, such as R1)

  

  | displayisisisdb DatabaseinformationforISIS (1) Level-1Link State Database LSPIDO Seq Num ChecksumbHoldtime Length ATT/P/OL 0001.0000.4004.00-00 0x00000008 0xb701 1186 68 0/0/0 0001.0000.2002.00-00Ox 0000008 0xb701 1186680/0/0 0001.0100.1001.00-00*0x00000050x2f9d1187 680/0/0 0001.0100.1001.01-00*0x00000001 0xa79e1110550/0/0 Level-2 Link State Database LSPIDAN> Seq Num Checksum., Holdtime Length ATT/P/OL 0001.00002002.00-00 0000000080xb7011188 6S0/0/0 0001.0100.1001.00-00* 0x00000060x2d9e 1187 680/0/0 0001.0100.1001.01-00* 0x00000005OxdObO 1191 660/0/0 0100.0000.3003.00-00 000000005 0xfe53 1185 560/0/0

  A. R1

  Correct Answer: A

• Question 124:

  What is the default aging time of the MA, C address table of Huawei switches?

  A. 300

  B. 500

  C. 400

  D. 5

  Correct Answer: A

• Question 125:

  Which of the following are documents that need to be handed over as part of the wrap-up of a structured network troubleshooting process files?

  A. Maintenance suggestions to avoid this fault

  B. Troubleshooting Summary Report

  C. Troubleshooting Procedure Documentation

  Correct Answer: ABC

• Question 126:

  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

  Correct Answer: B

• Question 127:

  Network administrator A wants to use the IP Prefix List to match a specific route entry. Which of the following routes will matched by the IIP Prefix List in the figure?

  A. 10.0.0.1/30

  B. 10.0.0.0/24

  C. 10.0.2.0/24

  D. 10.0.1.0/24

  Correct Answer: AB

• Question 128:

  During the process of viewing the debug input through the SSH terminal, there is a lot of pop-up information. Which of the following operations can make the monitor terminal no longer pop up the debug message?

  A. Open Notepad and enterundo terminal debugging,Copy the command line and paste it intoMonitorinterface

  B. Open Notepad and enterundo debugging all,Copy the command line and paste it intoMonitorinterface

  C. Open Notepad and enterundo terminal monitor,Copy the command line and paste it intoMonitorinterface

  D. exit currentMonitorinterface, re-SSHLog in to the device to open a new oneMonitorinterface

  Correct Answer: AB

• Question 129:

  In intra-domain MPLS VPN networks, data packets will be encapsulated with two layers of MPLS when they enter the public network and are forwarded. Label, a description of the two-layer label in the following options. What is wrong is:

  A. MPLS VPNThe outer label is made byLDPprotocol or statically assigneD. the inner label is assigned by the correct end MP-BGPassigned by neighbors

  B. By default, the outer label is popped before the packet is forwarded to the last hop device

  C. M PLS VPNThe outer layer is labeled as a private network label, and the inner layer label is called a public network label.

  D. Layer labels are used inPEThe device sends the packet correctly to the correspondingVPNmiddle

  Correct Answer: CD

• Question 130:

  As shown in the figure, on the R1 router, network administrator A sends the routing entry to R2 through the routing policy.

  After modifying the Local Preference value, you can control the path of traffic leaving the AS100.

  

  A. Correct

  B. wrong

  Correct Answer: B