Consider the following statements and fimd out the statements which is/are not true:
I -If all the jobs have the same completion time then FIFO results into shortest possible average response time.
II – If jobs length is less then the time quantum in then round robin will exactly behave like FIFO.
III – If job length is same for all jobs and much greater then time quantum also then it will poorly be compared to round robin.
(A) I only
(B) I and III only.
(C) All of these are correct.
(D) None of these are correct.


Answer: (C)

Explanation: I -If all the jobs have the same completion time or if the jobs happen to arrive in the ready queue with the shortest completion times first then FIFO results into shortest possible average response time.
II – If jobs length is less then the time quantum or in the round robin will exactly behave like FIFO.
III – If job length is the same for all jobs and much greater then time quantum also then it will poorly be compared to round robin.
So, option (C) is correct.


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