Huawei H31-321 Online Practice Questions and Exam Preparation

Huawei H31-321 Online Questions & Answers

• Question 11:

  What is the default user name of the NE when you create an OptiX OSN 3500 NE on the U2000 for per-NE commissioning?

  A. admin
  B. root
  C. szhw
  D. lct
  B. root

• Question 12:

  What path levels are available in an NG-SDH system?

  A. vc-11
  B. vc-12
  C. vc-3
  D. VC-4
  E. VC-4-XC (X = 4, 8, 16, 64)
  B. vc-12
  C. vc-3
  D. VC-4
  E. VC-4-XC (X = 4, 8, 16, 64)

• Question 13:

  In an SDH system, AU pointer justification events on most optical boards are detected through H1 and H2 bytes, namely, in remote detection mode.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 14:

  Which of the following are false about TE links?

  A. TE links are flooded to the entire network through the LMP protocol, so each ASON NE can learn about network-wide TE link information.
  B. An ASON NE floods its information (such as bandwidth) on TE links to the entire network through LSA, to provide data support for route calculation.
  C. A TE link, like a fiber, is a type of network resource and has bandwidth and protection attributes. A fiber may correspond to several TE links.
  D. TE links are verified before the control channel between two adjacent nodes is established.
  A. TE links are flooded to the entire network through the LMP protocol, so each ASON NE can learn about network-wide TE link information.
  D. TE links are verified before the control channel between two adjacent nodes is established.

• Question 15:

  An NE is frequently unreachable from the NMS. What are the typical reasons?

  A. The SCC board is faulty.
  B. Login user names duplicate.
  C. The network size is too large, and ECC communication is beyond the processing capability of the network.
  D. Conflicted NE IDs or IP addresses
  E. Fiber cuts
  A. The SCC board is faulty.
  B. Login user names duplicate.
  C. The network size is too large, and ECC communication is beyond the processing capability of the network.
  D. Conflicted NE IDs or IP addresses

• Question 16:

  The ASON feature supports automatic detection of network topology. Which protocols implement the automatic detection function?

  A. LMP
  B. OSPF-TE
  C. RSVP-TE
  D. CSPF
  A. LMP
  B. OSPF-TE

• Question 17:

  What is the line rate of 64-byte frames on an FE port of transmission equipment?

  A. 148810 frames/s
  B. 8128 frames/s
  C. 156250 frames/s
  D. 8160 frames/s
  A. 148810 frames/s

• Question 18:

  If a network carries Ethernet over SDH (EoS) services, you need to verify availability of EoS service channels during system commissioning. What verification methods are available?

  A. Ping command
  B. ETH OAM test
  C. PRBS test
  D. Test based on the board IP address
  A. Ping command
  B. ETH OAM test
  D. Test based on the board IP address

• Question 19:

  A 2M BER tester can be used for BER testing on electrical ports. To which of the following boards can a 2M BER tester be connected for BER testing on electrical ports?

  A. D75S
  B. D12S
  C. SEP1
  D. D34S
  A. D75S
  B. D12S

• Question 20:

  What are the common causes for pointer justification?

  A. Clock sources or clock source levels are configured incorrectly. As a result, there are two clock sources on one network or a timing loop occurs. AU and TU pointers will adjust.
  B. The power supply for the subrack is faulty, resulting in abnormal operation of clock boards. AU and TU pointers will adjust.
  C. The cross-connect board is faulty, resulting in degraded clock quality. AU and TU pointers will adjust.
  D. The tributary board is faulty, resulting in justification of both AU and TU pointers.
  A. Clock sources or clock source levels are configured incorrectly. As a result, there are two clock sources on one network or a timing loop occurs. AU and TU pointers will adjust.
  B. The power supply for the subrack is faulty, resulting in abnormal operation of clock boards. AU and TU pointers will adjust.
  C. The cross-connect board is faulty, resulting in degraded clock quality. AU and TU pointers will adjust.