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Free 4A0-255 – Nokia Advanced Optical Network Design Practice Test Question

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Showing 4–5 of 5 questions

Question 4

Suppose there is a 40 Gbit/s signal which has a symbol rate of Gbaud/s. Which modulation format is being used?

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    QPSK

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    BPSK

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    4QAM

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    DP-QPSK


Question 5

Which ofthe following statements about Raman amplification is FALSE?

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    Amplification occurs along the fiber

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    Chromatic dispersion within the fiber is increased.

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    Flat gain can be achieved in any transmission band.

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    OSNR is improved compared to EDFAs permitting lingers spans