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Q.

The qualifier differential to PSK means that

[A] it uses phase shifts of multiple of 90 degree
[B] it uses phase shifts of 180 degree
[C] phase shift is with reference to the previous bit transmitted
[D] none of these above
Answer & Explanation
Option: [B]

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DATA COMMUNICATION & COMPUTER NETWORKS – MULTIPLE CHOICE QUESTIONS AND ANSWERS | 250 MCQS

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