Huawei H31-321 Online Practice Questions and Exam Preparation

Huawei H31-321 Online Questions & Answers

• Question 101:

  According to the extended SSM protocol, clock switching is performed firstly according to clock priorities, and secondly according to clock quality levels.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 102:

  By default, which of the following alarms will trigger AIS insertion on OptiX NG-SDH equipment?

  A. R_OOF
  B. LP_UNEQ
  C. HP_UNEQ
  D. HP_LOM
  D. HP_LOM

• Question 103:

  When preparing for engineering information, you need to check networking information, such as the network diagram, network protection type, NE IP addresses, NE IDs, NE name allocation table, board information, fiber and cable connections, service routes and timeslot allocation, clock tracing diagram, and orderwire diagram.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 104:

  On a normal network, clock protection switching fails after the clock synchronization path is interrupted. As a result, lots of pointer justification events occur on related NEs. What are the possible causes for the failure of clock protection switching?

  A. Incorrect fiber connections between boards
  B. Optical power is incorrect.
  C. The clock tracing modes are incorrect.
  D. The network-wide clock protection switching protocols are incorrectly configured.
  E. Hardware faults
  A. Incorrect fiber connections between boards
  C. The clock tracing modes are incorrect.
  D. The network-wide clock protection switching protocols are incorrectly configured.
  E. Hardware faults

• Question 105:

  The cross-connections that fail to work on the network layer and exist only on isolated NEs are called unused services.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 106:

  All NEs of a subnet are unreachable to the U2000, but the communication between the other subnets and the U2000 is normal. What are the possible causes of this phenomenon?

  A. Incorrect fiber connections or fiber faults
  B. Failure in the U2000
  C. The IP address of the gateway NE is changed by mistake.
  D. The SCC board of the NE that is at the border of the affected subnet is faulty.
  E. The network size is too large, and ECC communication is beyond the processing capability of the network.
  A. Incorrect fiber connections or fiber faults
  C. The IP address of the gateway NE is changed by mistake.
  E. The network size is too large, and ECC communication is beyond the processing capability of the network.

• Question 107:

  What information is conveyed by SSN1SL16A01, a board bar code of NG-SDH equipment?

  A. Board version
  B. Board name
  C. Board feature code
  D. Board type
  A. Board version
  B. Board name
  C. Board feature code

• Question 108:

  Pointer justification is caused by asynchronous clocks on two interconnected NEs. When one NE reports a positive pointer justification event, the other NE reports a negative pointer justification event.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 109:

  Which of the following are true about TU pointer justification?

  A. The justification step of the TU pointer is three bytes.
  B. When VC-12 and TU-12 have no frequency or phase difference, the position of the V5 byte is 0.
  C. The value of the TU pointer is in the last 10 bits of the VI and V2 bytes.
  D. When VI and V2 are all "l"s, the local NE reports the TU-AIS alarm.
  C. The value of the TU pointer is in the last 10 bits of the VI and V2 bytes.
  D. When VI and V2 are all "l"s, the local NE reports the TU-AIS alarm.

• Question 110:

  What is the maximum number of NEs traversed by a data forwarding path in Huawei ECC communication?

  A. 16
  B. 32
  C. 63
  D. 128
  C. 63