H31-321 Exam Details

  • Exam Code
    :H31-321
  • Exam Name
    :Huawei Certified Network Professional-MSTP Transmission
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :140 Q&As
  • Last Updated
    :Jul 14, 2026

Huawei H31-321 Online Questions & Answers

  • Question 111:

    Which of the following indicates a negative AU pointer justification?

    A. Three bytes after H3
    B. Three H3 bytes of AU-FTR
    C. Three bytes before H3
    D. None of the above

  • Question 112:

    To objectively evaluate the performance of a network packet switching device, define test methods, and test report formats, you need to perform RFC 2544 performance tests. What does an RFC 2544 test cover?

    A. Throughput
    B. Packet loss rate
    C. Latency
    D. Back-to-back
    E. Maximum frame rate (line rate)

  • Question 113:

    What are the characteristics of a trail?

    A. A trail is a end-to-end connection.
    B. A trail has a source and a sink.
    C. A trail may pass through many intermediate nodes.
    D. A trail must be bidirectional.

  • Question 114:

    The ID of an OptiX OSN 3500 NE is composed of a basic ID and an extended ID. The basic ID and extended ID are set using DIP switches during equipment commissioning.

    A. TRUE
    B. FALSE

  • Question 115:

    Which of the following is false about the safe use of fibers?

    A. Use dedicated tools and materials to clean fiber connectors and the optical ports of lasers.
    B. Use optical attenuators if receive optical power is too high.
    C. An optical module that is recessed straightly can be directly connected to an optical attenuator.
    D. Connect an optical attenuator to an IN port, not OUT port,

  • Question 116:

    What are required to collect networking information during daily equipment maintenance of MSTP equipment?

    A. Obtain the network topology diagram.
    B. Check whether the network involves interconnection with third-party equipment. If such interconnection exists, check for configuration precautions and compatibility requirements.
    C. Obtain engineering design documents, including slot diagrams, fiber connection diagrams, mapping between NE name, NE ID, and NE IP addresses, equipment room layout, and ODF/DDF port distribution diagrams.
    D. Obtain historical information blocks of preventive maintenance inspection.
    E. Obtain equipment data backup information.

  • Question 117:

    When the NEs of a Huawei network are connected to third-party/external equipment you can create virtual NEs that are mapped to the third-party/externa I equipment and then create cross-subnet trails between Huawei NEs and virtual NEs. In this manner, discrete services can be prevented.

    A. TRUE
    B. FALSE

  • Question 118:

    The suppression function can be enabled for all alarm of an NE or a board. When an alarm is suppressed, the corresponding NE or board does not monitor this alarm.

    A. TRUE
    B. FALSE

  • Question 119:

    When the local end detects BER threshold-crossing in the receive direction, what performance events may be reported in the transmit direction of the peer end?

    A. LPFEBBE
    B. HPFEBBE
    C. MSFEBBE
    D. RSFEBBE

  • Question 120:

    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

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