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 81:

    The SL64 board can be used in an OSN 2500.

    A. TRUE
    B. FALSE

  • Question 82:

    Which of the following local maintenance endpoints can be used to manage MSTP devices?

    A. U2000 LCT
    B. U2000 Web LCT
    C. U2000 IP LCT
    D. All of the above

  • Question 83:

    RSOH, MSOH, HPOH, and LPOH implement monitoring functions in the descending order of monitoring scope.

    A. TRUE
    B. FALSE

  • Question 84:

    Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Choose four)

    A. The source service board sends services to the active and standby cross-connect boards.
    B. After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.
    C. The sink service board can receive only the data from the active cross-connect board.
    D. The buses of the two cross-connect modules work independently and do not interfere with each other.
    E. The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.
    F. Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.

  • Question 85:

    The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.

    A. TRUE
    B. FALSE

  • Question 86:

    Which of the following is not a condition that triggers multiplex section protection (MSP)?

    A. MS-AIS detected
    B. AU-AIS detected
    C. R-LOS detected
    D. R-LOF detected

  • Question 87:

    Which of the following are VLAN classification methods? (Choose four)

    A. By MAC address
    B. By port
    C. By subnet
    D. By protocol

  • Question 88:

    According to the formula of "ODUk rate = 239/(239-k) x STM-N frame rate", the ODU4 rate is equal to 239/235 x STM-N frame rate.

    A. TRUE
    B. FALSE

  • Question 89:

    An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted. Therefore, which of the following statements is correct?

    A. The LCAS function is enabled on the ports used by the Ethernet private line service between HI and H2.
    B. The LCAS function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
    C. The QinQ function is enabled on the ports used by the Ethernet private line service between HI and H2.
    D. The QinQ function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.

  • Question 90:

    EPL services exclusively use ports and bandwidths, and different users may need to share resources. Which of the following methods can be used to isolate user data?

    A. VLANID
    B. MPLS label
    C. QinQ technology
    D. All of the above

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