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 1:

    Which file needs to be modified on the U2000 to change the VC-12 timeslot numbering policy?

    A. trans_ems.cfg
    B. locale, properties
    C. ems.cfg
    D. imap.cfg

  • Question 2:

    What are the common causes for an SNCP switching failure?

    A. Hardware faults
    B. Incorrect fiber connections between boards
    C. Incorrect setting of protection group parameters
    D. Incorrect setting of hold-off time

  • Question 3:

    You can change the VC-12 numbering policy by configuring related parameters on the U2000.

    A. TRUE
    B. FALSE

  • Question 4:

    An NE is frequently unreachable to the NMS. Which of the following are possible causes?

    A. Conflicted NE IDs or IP addresses
    B. The network size is too large, and ECC communication is beyond the processing capability of the network.
    C. On the network, multiple users are attempting to log in to the NE.
    D. The cross-connect board is faulty.
    E. The SCC board is faulty.

  • Question 5:

    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

  • Question 6:

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

    A. TRUE
    B. FALSE

  • Question 7:

    You need to specify the length of data frames before using a data analyzer to test throughput. What is the length of a standard Ethernet frame?

    A. 64 bytes
    B. 128 bytes
    C. 1518 bytes
    D. 1544 bytes

  • Question 8:

    What kinds of service conversion are supported by an ASON network?

    A. Conversion between traditional SNCP services and diamond services
    B. Conversion between traditional services and gold services
    C. Conversion between traditional services and silver services
    D. Conversion between traditional services and copper services
    E. Conversion between traditional services and iron services
    F. Conversion between traditional services and tunnel services

  • Question 9:

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

    A. LMP
    B. OSPF-TE
    C. RSVP-TE
    D. CSPF

  • Question 10:

    Which of the following are false about service protection and restoration on an ASON network?

    A. Typically, services are protected using the pre-allocated resources between NEs, These resources cannot be shared on the entire network.
    B. Generally, services are restored using any resource between NEs.
    C. Generally, protection switching time is less than 50 ms. During service rerouting, service routes need to be re-calculated. Therefore, service restoration time is longer, and a service can be restored in seconds.
    D. When the route of a service fails, the network automatically seeks a substitute route, and the service restoration algorithm is different from the route selection algorithm.
    E. To enable the service restoration function on an ASON network, you need to reserve some idle resources for service rerouting. Services are restored in rerouting mode on an ASON network.

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