The NG WDM two-dimensional ROADM site can use the WSMD9 single board, and its signal flow is an optical signal that is connected to the main optical channel from the "IN" optical port. The RDU (ROADM Demix Unit) optical module broadcasts 9 identical optical signals, which are output from the "DM1~DM8" and "ECPO" optical ports respectively. One of the signals is localized by the splitter board, and the other eight signals are dispatched to the other eight directions. Each wave of the main optical channel is connected from the "EXPI" optical port. The multiplexed or single-wave optical signal that needs to be inserted locally is input through the "AM1"~"AM8" optical port.

• A.FALSE
• B.TRUE

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Which of the following reasons may cause a business error? (Multiple choice)

• A.The optical power of the incoming fiber is too high or too low
• B.The temperature in the equipment room is too high
• C.The tail wire connector is seriously polluted
• D.Transmitting laser performance degradation of the originating OTU board
• E.Dispersion compensation is unreasonable, such as under- or over-compensation

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Which of the following description of 1+1 optical line protection is wrong?

• A.The active and standby input light difference defaults to 5dB.
• B.The switching method defaults to non-recovery
• C.The switching mode defaults to double-ended switching
• D.The primary and secondary input lights initial difference defaults to 0.

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Which of the following is not a part of the ASON Control Protocol?

• A.OSPF-TE
• B.LMP
• C.RSVP-TE
• D.IS-IS

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Which of the following paths can be configured on the network management? (Multiple Choice)

• A.OCh
• B.Client
• C.OTS
• D.ODUk

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