Question

For Mutual exclusion to prevail in the system ____________

(a) at least one resource must be held in a non sharable mode

(b) the processor must be a uniprocessor rather than a multiprocessor

(c) there must be at least one resource in a sharable mode

(d) all of the mentioned

The question was asked during an interview.

I would like to ask this question from Deadlock Prevention in portion Deadlocks of Operating System

Answer 1

Correct option is (a) at least one resource must be held in a non sharable mode

The explanation is: If another process requests that resource (non – shareable resource), the requesting process must be delayed until the resource has been released.