Question

Which among the following issues consider cost as a route metric?

a.

Spectrum knowledge

b.

Overhead

c.

Link failure

d.

Best path selection

Posted under Cognitive Radio

Answer: (d).Best path selection Explanation:Best path selection considers the following route metrics namely delay, power efficiency, interference, throughput, and cost. The path that closely meets the quality of service requirements of the application is chosen as the best path. The cognitive radio network calculates several paths considering the possibility of the arrival of a primary user, the robustness of a path, etc.

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Q. Which among the following issues consider cost as a route metric?
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