题目内容
(请给出正确答案)
[单选题]
A2.5Gb/s(OC-48orSTM-16)opticalsignalwithadispersiontoleranceof1200ps/nmgoesthroughfiberwith18ps/nm*kmofdispersion.Howmany15216-DCU-350equivalentsareneededforenoughcompensationaftertraveling100km?()
A.none
B.one
C.two
D.three
E.four
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