For emergency handling of business interruptions, fault location should be performed as soon as possible, and then the business should be resumed.

• A.FALSE
• B.TRUE

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The 40 Gbit/s and 100 Git/s coherent systems do not require dispersion compensation because the coherent board has a large dispersion tolerance. NG WDM does not support non-coherent networks and coherent networks for hybrid transmission.

• A.TRUE
• B.FALSE

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The main light path monitoring is based on the OMS segment and it mainly monitors which of the following items? (Multiple choice)

• A.The main light path is broken?
• B.Line attenuation compensation is abnormal
• C.The origin of the optical discharge power is abnormal
• D.Line attenuation exceeds the design EOL value.

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Which of the following standards must be met for the isolation test in the feature test of the multiplexer/demultiplexer?

• A.>25dB
• B.<20dB
• C.>20dB
• D.<25dB

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For the nonlinear effect FWM, which of the following way is correct?

• A.Control the incoming fiber power
• B.Using large effective area fiber
• C.Control the optical power of a single wavelength
• D.Do not use G.653 fiber in DWDM systems

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