Question 1

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 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

On OSN Series transmission devices, ethernet ports cannot access tagged and untagged frames at the same time

Options :

A : True

B : False

Answer: B

Question 4

Which of the following statements about basic LCAS functionality are correct? (Multiple choice).

Options :

A : New network elements and links are automatically discovered.

B : Bandwidth dynamically increases or decreases. .

C : Failed members are protected and restored. .

D : Provides a fault-tolerant mechanism to enhance the robustness of the virtual cascading function. .

Answer: B,C,D

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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