Huawei Huawei Certifications H31-321 Questions & Answers

• Question 101:

  Which of the following is used to define the total number of frames received at line rate without packet loss?

  A. Throughput

  B. Latency

  C. Packet loss rate

  D. Back-to-back

  Correct Answer: D

• Question 102:

  Which protocol is responsible for TE link verification on an ASON network?

  A. LMP

  B. OSPF-TE

  C. RSVP-TE

  D. CSPF

  Correct Answer: A

• Question 103:

  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

  Correct Answer: ABCD

• Question 104:

  The physical cross-connect board of an OSN 3500 is N1SXCSA. Which of the following can be configured as the logical board for N1SXCSA?

  A. N1SXCSA

  B. N1EXCSA

  C. N1UXCSA

  D. N2SXCSA

  E. N2EXCSA

  Correct Answer: ABC

• Question 105:

  MSP and SNCP can coexist on a complex network. Which of the following statements are true?

  A. Some timeslots have double protection.

  B. By default, an SNCP switchover takes a shorter time than an MSP switchover.

  C. Two SNCP switchovers will occur if SNCP holdoff time is not set.

  D. Frequent switchovers do not affect services.

  Correct Answer: ABC

• Question 106:

  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.

  Correct Answer: C

• Question 107:

  The grounding requirements of 75-ohm and 120-ohm unbalanced coaxial cables are the same.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 108:

  What are the purposes of SDH clock synchronization?

  A. To ensure that all digital devices in a communication network works at the same nominal frequency

  B. To minimize the effect of slips, burst bit errors, phase jumps, jitters, and wanders on digital communications systems

  C. To minimize the need for pointer adjustment of SDH equipment

  D. To enhance clock quality

  E. To avoid clock loops

  Correct Answer: ABC

• Question 109:

  A ring is configured with STM-64 two-fiber bidirectional MSP. The port rate of the ring is 10 Gbit/s.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 110:

  Besides input and output electrical specifications, the maximum transmission distance of various types of cables also has relevant ITU-T recommendations. 75-ohm and 120-ohm coaxial E1 trunk cables have the same transmission distance.

  A. TRUE

  B. FALSE

  Correct Answer: B