Huawei H31-331 Exam
Huawei Certified Network Professional-Building Carrier OTN Transmission Network (Page 6 )

Updated On: 9-Feb-2026

Which of the following are part of the WDM system commissioning work? (multiple choice)

  1. Commissioning protection
  2. Commissioning feature
  3. Test error
  4. Optical power commissioning
  5. Cabinet installation

Answer(s): A,B,C,D



OLP is single-ended switching. In the case of a single fiber break, there will be inconsistencies in the sending and receiving routes.

  1. True
  2. False

Answer(s): A



Which of the following is not an advantage of the M40/D40 compared to the MR2?

  1. Channel flatness
  2. Filtering noise
  3. Support smooth expansion within 40 waves
  4. Can achieve wavelength multiplexing and splitting

Answer(s): D



Which of the following combinations of dynamic optical add/drop multiplex boards is not true?

  1. WSD9+WSM9
  2. RDU9+RMU9
  3. WSD9+RMU9
  4. RDU9+WSM9

Answer(s): B



When the IPA function is configured, when multiple auxiliary detection boards are configured, the detection board and all the auxiliary detection boards detect signal anomalies at the same time (if there are alarms such as MUT_LOS/R_LOS/R_LOF/K_LOC/OSC_RDI), the fiber is considered to be broken; The auxiliary detection board and the detection board are all restored to normal, and the fiber recovery is considered.

  1. True
  2. False

Answer(s): B






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