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GATE | GATE-CS-2002 | Question 22

  • Last Updated : 28 Jun, 2021

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.

 

Please comment below if you find anything wrong in the above post.
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