Question 1

Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.

Options :

A : True

B : Error

Answer: A

Question 2

Some SNCP protection inversion conditions are default, such as AU-AIS and TU-AIS. Other conditions are optional, such as HP-TIM and HP-SLM. Optional conditions can be flexibly set according to the level of the costume.

Options :

A : True

B : Error

Answer: A

Question 3

Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in 1:1 mode of the LMSP.

Options :

A : True

B : Error

Answer: A

Question 4

When the J1 byte does not match, an alarm () is reported and the service may be interrupted.

Options :

A : RS_TEM

B : LP_TEM

C : HP_TIM

D : HP_SLM

Answer: C

Question 5

Which factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent After the signal transmission in the WOM system is transmitted over a certain distance, the 'oSNR' of the receiving end of the optical signal-to-noise ratio is reduced to a certain extent. Which of the following is the main cause?

Options :

A : Use EDFA. ).

B : Use of multi-density multiplexers and multiplexers.

C : Do not use new optical fibers.

D : Optical fiber attenuation is too high.

Answer: A

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