Which of the following scheduling algorithms is non-preemptive?
(A)
Round Robin
(B)
First-In First-Out
(C)
Multilevel Queue Scheduling
(D)
Multilevel Queue Scheduling with Feedback
Answer: (B)
Explanation:
Round Robin – Preemption takes place when the time quantum expires First In First Out – No Preemption, the process once started completes before the other process takes over Multi Level Queue Scheduling – Preemption takes place when a process of higher priority arrives Multi Level Queue Scheduling with Feedback – Preemption takes a place when process of higher priority arrives or when the quantum of high priority queue expires and we need to move the process to low priority queue So, B is the correct choice.
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