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H31-311_V2.5 · Question #325
H31-311_V2.5 Question #325: Real Exam Question with Answer & Explanation
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Question
Which of the following factors determine that the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent? In the WDM system, after the signal is transmitted for a certain distance, the optical signal-to-noise ratio (OSNR) at the receiving end is reduced to a certain extent. Which of the following is the main reason?
Options
- AUsing EDFA
- BUsing Multiplexers and Demultiplexers
- CNo new optical fiber is used
- DFiber attenuation is too high
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