Huawei H31-321 Online Practice Questions and Exam Preparation

Huawei H31-321 Online Questions & Answers

• Question 21:

  In a board replacement scenario, an SDH board is configured with ring MSP. Which alarm will be reported after a forced switchover?

  A. APSJNDI
  B. APS_MANUAL_STOP
  C. R_APS
  D. APS_FAIL
  A. APSJNDI

• Question 22:

  Which of the following are false about software installation on the PC that runs the NMS?

  A. Ensure that anti-virus software is installed on the PC.
  B. Game software can be installed after anti-virus software.
  C. You can access the Internet on the PC.
  D. Regular upgrade is not needed for the anti-virus software.
  A. Ensure that anti-virus software is installed on the PC.
  B. Game software can be installed after anti-virus software.
  C. You can access the Internet on the PC.

• Question 23:

  No fiber connections exist between three rings. The gateway NEs of the three rings are connected to the NMS using different network cables but through the same HUB. What can you do to isolate ECC communication between the gateway NEs?

  A. Disable extended ECC on the three gateway NEs.
  B. Disable the OSI protocol on the three gateway NEs.
  C. Disable DCC access on the three gateway NEs.
  D. Delete the DCC transparent transmission bytes on the three gateway NEs.
  A. Disable extended ECC on the three gateway NEs.
  B. Disable the OSI protocol on the three gateway NEs.

• Question 24:

  Which of the following is not the daily basic maintenance operation on the U2000?

  A. Browsing the current alarms
  B. Checking the communication between the U2000 and NEs
  C. Querying the security logs of the U2000
  D. Checking the disk space of the U2000 server
  D. Checking the disk space of the U2000 server

• Question 25:

  To test the communication status of an NE, right-click the NE on the Main Topology of the U2000 and choose Ping.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 26:

  Latency of cut-through equipment is the difference between the time the first bit of a data frame enters the equipment and the time the first bit exits the equipment.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 27:

  Which of the following are true about an SDH network?

  A. The NMS communicates with a gateway NE using the OSPF protocol.
  B. NEs communicate with each other over ECCs.
  C. ECC communication is implemented by the D byte.
  D. The maximum DCC rate is 192 Kbit/s.
  E. By default, Huawei OptiX equipment uses Dl to D3 bytes for DCC communication. After ASON is enabled, the D4 to D12 bytes can function as inband control channels to transmit control information for the control plane.
  B. NEs communicate with each other over ECCs.
  C. ECC communication is implemented by the D byte.
  E. By default, Huawei OptiX equipment uses Dl to D3 bytes for DCC communication. After ASON is enabled, the D4 to D12 bytes can function as inband control channels to transmit control information for the control plane.

• Question 28:

  Which of the following bytes cannot be processed in pass-through mode on an ADM site using OptiX NG-SDH equipment?

  A. K1
  B. K2
  C. A1
  D. A2
  C. A1
  D. A2

• Question 29:

  During normal operation of a network, the conditions that trigger a protection switching are generated on the working channel but services fail to be automatically switched to the protection channel. Services are interrupted, but the MS protocol status is normal on the NMS. What are the possible causes?

  A. Incorrect fiber connections between boards
  B. The cross-connect or line board is faulty.
  C. The configuration data on the NE and those on the NMS are inconsistent. As a result, the parameters of MSP nodes do not take effect.
  D. Equipment power failure
  E. The SCC board is faulty.
  A. Incorrect fiber connections between boards
  B. The cross-connect or line board is faulty.
  C. The configuration data on the NE and those on the NMS are inconsistent. As a result, the parameters of MSP nodes do not take effect.
  D. Equipment power failure

• Question 30:

  Which of the following is true about pointer justification?

  A. The justification step of AU and TU pointers is 1 byte.
  B. If the local NE detects an TU pointer justification event in the lower order path, pointer justification has occurred on the local NE.
  C. When an NE receives eight consecutive NDFs, the NE reports the AU_LOP alarm, indicating loss of the AU pointer.
  D. When the rate (frame frequency) of VC-4 is higher than that of the AU-4, a positive pointer justification will occur.
  C. When an NE receives eight consecutive NDFs, the NE reports the AU_LOP alarm, indicating loss of the AU pointer.