Free H31-331 Exam Braindumps (page: 24)

Page 24 of 46

Which of the following options is not the cause of the R-LOF alarm?

  1. Receive signal attenuation is too large
  2. The peer station sends a signal without frame structure
  3. The board receives the direction failure
  4. Broken fiber

Answer(s): D



Which of the following statements about EDFA is wrong.

  1. EDFA's amplification of optical signals is pure optical amplification, no photoelectric conversion is required.
  2. Noise figure, saturated output power, gain flatness, gain, etc. are all important parameters for
    characterizing EDFA
  3. 1510nm optical monitoring channel can be effectively amplified by EDFA
  4. When the EDFA output power reaches saturation, increase the input optical power and the gain of the EDFA will decrease.

Answer(s): C



The following descriptions of the OSN 6800 devices are correct. (multiple choice)

  1. The adjustable attenuation range of each channel of VA4 is 2~20dB
  2. The wavelength selection of the tunable wavelength OTU can be performed on the network management
  3. The NMS can set the ID of each subrack of the OptiX OSN 6800 device.
  4. After monitoring the 15-minute and 24-hour performance events, all performance events will be cleared.

Answer(s): A,B



The following descriptions of the OSN 6800 devices are correct. (multiple choice)

  1. The adjustable attenuation range of each channel of VA4 is 2~20dB
  2. The wavelength selection of the tunable wavelength OTU can be performed on the network management
  3. The NMS can set the ID of each subrack of the OptiX OSN 6800 device.
  4. After monitoring the 15-minute and 24-hour performance events, all performance events will be cleared.

Answer(s): D



Page 24 of 46



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