H31-311 Exam Details

  • Exam Code
    :H31-311
  • Exam Name
    :HCIA-Transmission V2.5
  • Certification
    :Huawei Certifications
  • Vendor
    :Huawei
  • Total Questions
    :256 Q&As
  • Last Updated
    :May 25, 2026

Huawei H31-311 Online Questions & Answers

  • Question 131:

    When synchronization is performed on the 1U2000, the NE data that is the same as that on the U2000 is not uploaded to the U2000, and the data that exists on the U2000 but not on the NE is deleted.

    A. TRUE
    B. FALSE

  • Question 132:

    Optical fiber loss includes the bending loss, absorption loss, and scattering loss.

    A. TRUE
    B. FALSE

  • Question 133:

    Two PIU or APIU boards of an OptiXtrans E6616/OptiX OSN 1800V Pro are used to supply power for the system in hot backup mode. When either of the two PIU or APIU boards is faulty, the system can still function properly.

    A. TRUE
    B. FALSE

  • Question 134:

    When using OTDR to locate fiber faults, which characteristic indicates a fiber break?

    A. A sharp drop at the end of the trace
    B. A gradual slope in the trace
    C. A reflective peak followed by normal attenuation
    D. Minor fluctuations across the trace

  • Question 135:

    Which of the following types of optical fibers has the zero-dispersion feature at 1310 nm?

    A. G.654
    B. G.653
    C. G.652
    D. G.655

  • Question 136:

    Which of the following alarm/event dumping modes are supported by the U2000? (Choose three)

    A. Manual dumping
    B. Automatic dumping
    C. Overflow dumping
    D. Periodic dumping of alarm logs

  • Question 137:

    When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?

    A. 35G
    B. 58.75G
    C. 80G
    D. 155G

  • Question 138:

    In an MSTP network carrying GPON OLT uplink traffic, which configuration improves service differentiation?

    A. Apply CoS remarking
    B. Disable QoS
    C. Assign all traffic to best-effort forwarding
    D. Block VLAN tagging

  • Question 139:

    In MSTP packet-enhanced mode, which features support differentiated QoS? (Choose two)

    A. Queue scheduling mechanisms
    B. Classification using VLAN/CoS/DSCP
    C. Disabling buffer management
    D. Forced equal distribution of all services

  • Question 140:

    The rate of STM-0 is 51.84 Mbit/s.

    A. TRUE
    B. FALSE

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