Huawei H31-321 Online Practice Questions and Exam Preparation

Huawei H31-321 Online Questions & Answers

• Question 81:

  The cross-connection resources used by discrete services cannot be used to create other services. All discrete cross-connections must be deleted.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 82:

  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
  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

• Question 83:

  Which of the following statements are true about ground resistance?

  A. Less than 1 ohm at an integrated telecom building
  B. Less than 5 ohms at a common telecom office/site
  C. The higher ground resistance is, the better.
  D. At an area where soil resistivity is high, the ground resistance can be 10 ohms
  A. Less than 1 ohm at an integrated telecom building
  B. Less than 5 ohms at a common telecom office/site
  D. At an area where soil resistivity is high, the ground resistance can be 10 ohms

• Question 84:

  ECC routes are set up, updated, and maintained through broadcast at regular intervals. The larger a network, the more data is generated.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 85:

  When measured rate is smaller than or equal to throughput, frame forwarding latency can be classified by data type into store-and-forward latency and what?

  A. Cut-through latency
  B. Bit processing delay
  C. Bit transmission delay
  A. Cut-through latency

• Question 86:

  Which of the following about the SSM protocol are true?

  A. After the SSM protocol is disabled, the clock network can be unidirectional but cannot adopt a ring
  B. topology.
  C. After the standard SSM protocol is enabled, the clock network can be bidirectional but cannot adopt a ring topology.
  D. After the extended SSM protocol is enabled, the clock network can be bidirectional and adopt a ring topology, which can be intersecting or tangent with other networks.
  E. The SSM protocol has little to do with clock networks.
  A. After the SSM protocol is disabled, the clock network can be unidirectional but cannot adopt a ring
  B. topology.

• Question 87:

  Which of the following are true about laser safety operations?

  A. When installing or maintaining an optical interface board or optical fibers, do not look into the optical interface board or fiber connectors.
  B. You need to disconnect the fiber jumper from the optical interface board of the peer NE when using an optical time domain reflectometer (OTDR).
  C. Use protective caps to cover unused optical ports and optical connectors of fiber jumpers.
  D. You can replace optical interface boards or optical modules during equipment-side maintenance.
  A. When installing or maintaining an optical interface board or optical fibers, do not look into the optical interface board or fiber connectors.
  B. You need to disconnect the fiber jumper from the optical interface board of the peer NE when using an optical time domain reflectometer (OTDR).
  C. Use protective caps to cover unused optical ports and optical connectors of fiber jumpers.

• Question 88:

  Two MSP rings are intersected. Which of the following statements is false?

  A. If SNCP works in revertive mode on the tangent node, two switchovers may occur after a fiber cut.
  B. Inter-ring services are protected even if an intersecting node is not configured with unidirectional cross-connections.
  C. Generally, a tangent node is configured with two SNCP protection groups, two unidirectional cross-connections, and the other intersecting node is configured with two bidirectional cross-connections.
  B. Inter-ring services are protected even if an intersecting node is not configured with unidirectional cross-connections.

• Question 89:

  Which of the following system control boards allows an N1SXCSA board to be substituted with an N2PSXCSA board?

  A. N1GSCC
  B. N2GSCC
  C. N3GSCC
  D. N4GSCC
  D. N4GSCC

• Question 90:

  What is the value of an AU-FTR pointer without frequency or phase difference?

  B. 521
  C. 522
  D. 782
  C. 522