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Which two statements are true about optical networks?

Which two statements are true about optical networks? (Choose two.)

PrepAway - Latest Free Exam Questions & Answers

A.
An optical transport network system uses wavelength-division multiplexing.

B.
SONET and SDH both use wavelength-division multiplexing.

C.
SONET and SDH both use time-division multiplexing.

D.
An optical transport network system uses time-division multiplexing.


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