Raman gain depends on the pump power and the quality of the fiber link

• A.TRUE
• B.FALSE

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When the MR1 board is used as an OSN1800 single fiber bidirectional in the following scenarios, you can use the MR2 or MR4 board instead

• A.TRUE
• B.FALSE

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For inter-board wavelength protection and client-side 1+1 wavelength protection, it is forbidden to manually set the "laser status" of the backup OTU client-side optical interface to "on", otherwise the service will be interrupted.

• A.TRUE
• B.FALSE

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The reason for reporting the BEFFEC_EXC alarm is that the following statement is wrong

• A.The signal has too much loss in line transmission.
• B.The FEC mode settings of the OTU at both ends are incorrect.
• C.This alarm will not be reported in AFEC mode.
• D.The input optical power of the OTU board is too high or too low

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When relocating the OLA site (10G system), which of the following descriptions are wrong

• A.The relocation distance has changed, and the system dispersion needs to be re-evaluated
• B.There is no need to adjust the optical power of upstream and downstream sites in the network management during the relocation process
• C.The relocation distance has changed and the system signal-to-noise ratio needs to be reassessed
• D.The relocation distance has changed, and the optical power of the line needs to be reassessed

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