Question

Which among the following is not a disadvantage ICMP protocol for direct inter layer communication?

(a) IP headers are included

(b) High protocol processing overhead

(c) Limited to request-respond action

(d) Loss of message packet cannot be identified

Answer 1

The correct choice is (d) Loss of message packet cannot be identified

For explanation I would say: ICMP protocol has a large protocol header and protocol processing overhead. It is limited to request-response actions. However, cross-layer design demands for asynchronous communication. This can be overcome by creating a call back function with a procedure suited to the needs of the layers under consideration.