Huawei Huawei Certifications H31-321 Questions & Answers

• Question 81:

  An SNCP ring and an MSP ring are tangent. Which of the following are true about inter-ring service configuration on the tangent node?

  A. Configure one SNCP group for the service from the SNCP ring to the MSP ring.

  B. Configure two SNCP groups for the service from the SNCP ring to the MSP ring.

  C. Configure unidirectional cross-connections in dual transmission mode for the service from the MSP ring to the SNCP ring.

  D. Configure bidirectional cross-connections in dual transmission mode for the service from the MSP ring to the SNCP ring.

  Correct Answer: AC

• Question 82:

  On a network where MSP rings and SNCP rings share fiber resources, if Assigned by VC-4 is selected, you need to set holdoff time for SNCP services.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 83:

  The actual optical power received should meet the requirements: (minimum sensitivity + 5 dB) < received optical power (tested) < (minimum overload threshold - 3 dB).

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 84:

  What is the purpose of setting SNCP holdoff time?

  A. An SNCP switchover takes a longer time than an MSP switchover.

  B. SNCP switching is reliable and efficient.

  C. To prevent a second SNCP switching

  D. None of the above

  Correct Answer: C

• Question 85:

  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.

  Correct Answer: AD

• Question 86:

  When optical fibers are incorrectly connected, lots of pointer justification events will occur. Which of the following methods can be used to further locate the fault?

  A. Disconnect fibers and shut down lasers.

  B. Insert the MS_RDI alarm on the NMS.

  C. Observe pointer justification events.

  D. Change the J1 byte traced by a higher order path on the NMS.

  Correct Answer: ABD

• Question 87:

  In the environment defined by ETSI EN 300 019-2-3 class 3.2, how often should air filters be cleaned?

  A. Every half a month

  B. Monthly

  C. Bimonthly

  D. Quarterly

  Correct Answer: B

• Question 88:

  You can check the protection switching status of a network using the NMS. Which of the following is false?

  A. Query MSP attributes and protection switching status on the Main Topology.

  B. To query MSP switching status, choose Configuration > Ring MS in the NE Explorer.

  C. To query SNCP switching status, choose Configuration > SNCP Service Control in the NE Explorer.

  D. To query TPS status, choose Configuration > TPS Protection in the NE Explorer.

  Correct Answer: A

• Question 89:

  Larger value of SSMB indicates better quality of a clock source.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 90:

  If a pointer justification occurs at the eleventh frame, at which frame will the next pointer justification occur?

  A. 12

  B. 13

  C. 14

  D. 15

  Correct Answer: D