Huawei H31-311 Exam Questions
HCIA-Transmission V2.0 (Page 5 )

Updated On: 2-Mar-2026

When multiple users need to share the same VCTRUNK and use the same VLAN ID, the QinQ technology can be used.

  1. TRUE
  2. FALSE

Answer(s): A



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

  1. The source service board sends services to the active and standby cross-connect boards.
  2. 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.
  3. The sink service board can receive only the data from the active cross-connect board.
  4. The buses of the two cross-connect modules work independently and do not interfere with each other.
  5. 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.
  6. 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.

Answer(s): A,D,E,F



In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than ( ) wavelengths are used.

  1. 4
  2. 8
  3. 16
  4. 20

Answer(s): C



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.

  1. TRUE
  2. FALSE

Answer(s): B



Linear MSP (LMSP) has two modes; 1+1 and 1:1. Extra services can be configured for the protection channel only in the 1:1 mode of LMSP.

  1. TRUE
  2. FALSE

Answer(s): A



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