The alarm detection of the optical layer overhead is realized through the optical layer overhead OOS. Which of the following descriptions about the optical layer overhead alarm is correct?

Question

Options

• AAs long as the optical monitoring channel is enabled, the optical layer overhead alarm can be reported
• BOptical layer overhead alarms are automatically reported by default
• CWhether the optical layer overhead alarm can be accurately reported has nothing to do with the logical
• DThe WDM system does not enable the optical monitoring channel, and the optical layer overhead alarm

• A
  6% (4)
• B
  3% (2)
• C
  9% (6)
• D
  82% (53)

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