Question

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

(a) Spectrum knowledge

(b) Overhead

(c) Link failure

(d) Best path selection

The question was posed to me in a job interview.

I want to ask this question from Next Generation Wireless Network in division Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct option is (d) Best path selection

For 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.