Question

__________ is the time required for a terminal to sense whether or not the channel is idle.

(a) Propagation delay

(b) Average delay

(c) Detection delay

(d) Time delay

I had been asked this question by my college professor while I was bunking the class.

I'd like to ask this question from Packet Radio topic in chapter Multiple Access Techniques for Wireless Communications of Wireless/Mobile

Answer 1

The correct answer is (c) Detection delay

For explanation: In CSMA protocols, detection delay and propagation delay are two important parameters. Detection delay is a function of the receiver hardware and is the time required for a terminal to sense whether or not the channel is idle.