In order to maintain the reach of a typical 100G WAN transport system(~1500 km),several system improvements have to be made to r

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问题 In order to maintain the reach of a typical 100G WAN transport system(~1500 km),several system improvements have to be made to recover the los(93),including the use of low-loss low-nonlinearity(94),Raman amplification,and stronger error correction.
(93)

选项 A、noise
B、SNR
C、speed
D、error

答案B

解析
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