Question

Which among the following is not an advantage of employing cross-layer design implementation?

(a) High accuracy of computation results required in algorithms

(b) Elimination of wasteful calculations

(c) High quality of service

(d) Better performance during spectrum handoff

I got this question in an interview for job.

The above asked question is from Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio

Answer 1

Correct answer is (d) Better performance during spectrum handoff

The explanation: Cross-layer design improves the accuracy and the productivity of algorithms by extending the amount of information at hand. Cross-layer design helps to adjust in accordance with the varying resource availability. It eliminates computations that are performed due to a lack of communication between the layers of the protocol stack.