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Free H31-331 Exam Braindumps
Huawei Certified Network Professional-Building Carrier OTN Transmission Network Questions 46–50 (page: 11)

Updated On: 9-Feb-2026
Page 11 of 37
PDF with 180 Questions

Which of the following signals is sent back to the originator?

  1. AIS
  2. LCK
  3. IAE
  4. BDI

Answer(s): D



The Ethernet test frame is an important means to locate whether the data board service configuration is correct. When the LOG board performs Ethernet test, it has nothing to do with whether to configure electrical crossover. If the local and remote TDGs are configured to cross the service to the local and remote LOG cards, the TDG board will not receive the response test frame anyway.

  1. True
  2. False

Answer(s): A



OTU is one of the important components of the WDM system. Which of the following is wrong about OTU?

  1. The most basic function of the originating OTU is to perform wavelength conversion to convert the wavelength of the signal that is not suitable for WDM system transmission to the wavelength that meets the transmission requirements of the WDM system.
  2. -20dB spectral width, side mode suppression ratio, center wavelength, frequency offset, etc. are all important parameters or indicators to measure the OTU wave side transmitter.
  3. The greater the dispersion tolerance of the transmitter, the farther the signal can transmit without dispersion compensation.
  4. Sensitivity and overload point are important parameters/indicators for measuring the OTU receiver. The sensitivity of the PIN receiver is better than that of the AP

Answer(s): D



After you create an NE, you cannot log in. What are the possible reasons? (multiple choice)

  1. The NE user password is incorrect.
  2. The NE user is logged in.
  3. The communication between the NMS and the NE is abnormal.
  4. The time between the NE side and the NMS side is not synchronized.

Answer(s): A,B,C



Which of the following measures does not effectively improve the signal-to-noise ratio of the system?

  1. Power amplifier with high saturation output
  2. Use better quality fiber optic cable

  3. Using optical-electric-optical relay boards
  4. Turn off the FEC error correction function of the service board.

Answer(s): D



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