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Question # 4

Consider the above exhibit, which shows a WDM network map from EPT. A new trail at 10G needs to be created from Site1 to Site3. The design tool routes the trail through Site1 but the trail is evaluated as invalid due to insufficient OSNR margin. Among the following option, which is NOT effective for making the 10G trail valid?

A.

Use a FEC with a lower code rate

B.

Use 3R regeneration at Site2

C.

Use a DCM at Site 2

D, Use a Raman amplifier at Site2

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Question # 5

Which of the following best describes Flexgrid?

A.

Flexgrid is based on flexible amplification stages

B.

Flexgrid uses flexible guardband that can take any spacing.

C.

Flexgrid is defined on a frequency grid spacing based on ,multiples of 12.5 GHz.

D.

Flexgrid allows channel bandwidth central frequencies and guardband to take any value in the spectrum range.

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Question # 6

Consider the exhibit. Which type of survivability mechanism is selected for this trail?

A.

Source-based restoration.

B.

Guaranteed restoration

C.

Optical sub-network connection protection

D.

Protection and restoration combined

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