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Which among the following occurs when intermediary nodes choose identical frequency bands?

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Which among the following occurs when intermediary nodes choose identical frequency bands?

(a) Link failure

(b) Increased cost

(c) Increased power

(d) Increased delay

This question was addressed to me in an online quiz.

Enquiry is from Next Generation Wireless Network in chapter Next Generation Wireless Network of Cognitive Radio

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Best answer
The correct choice is (d) Increased delay

The best explanation: In the location coordination scheme, multihop paths are created, where intermediary nodes might select an identical frequency band. It results in increased switching delay. This can be avoided by introducing a scheduling mechanism such as polling.

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