For a certain optical layer scheduling board (such as WSD9/WSM9/WSMD4), you can set the optical wavelength routing in the board separately.

Answer(s): A

Which of the following alarms triggers optical line protection switching in the optical line protection of the NG WDM 40G systems?

Answer(s): B

The split ratio of the MON port to the OUT port is 1:99. How much dB is the MON power lower than the OUT port?
Which of the following is correct?

Answer(s): C

For WDM devices, the smaller the channel spacing, the smaller the frequency offset allowed by the center frequency.

Answer(s): A

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