FOADM includes parallel FOAD and serial FOADM, both supporting 40 waves or 80 waves of arbitrary wavelengths.

• A.TRUE
• B.FALSE

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NS4 as 100G line service processing board. In the following description of the NS4 board, which is wrong?

• A.The MS4 board does not support the intersection of ODUI services with the ND2 board through the centralized crossover bus.
• B.Support 80-way ODU0/ODUflex or 40-way ODU1 or 10-way ODU2/ODU2e or 2-way ODU3 or 1-way ODU4 signal and cross-board to realize service cross-scheduling.
• C.It can be used in electrical relay stations to realize the electrical relay function of the corresponding optical signals.
• D.The wavelength of the wavelength division side optical signal is adjustable within 80 waves of the C-band 50 GHz interval.

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Which of the following is a part of the optical layer in the OTN frame structure? (Multiple Choice)

• A.OMS
• B.OCh
• C.ODUk
• D.OPUk

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When configuring 1+1 optical line protection, you can select RI1/TI2/TO2 as the working channel according to the actual situation.

• A.TRUE
• B.FALSE

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An OTN network uses WSMD4 to form a ROADM network element. After the logical fiber is created, the paths that can be directly searched are: (Multiple choice)

• A.OMS
• B.OCh
• C.OTS
• D.Client

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