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_______ is one of pre-emptive scheduling algorithm.

  1. $RR$
  2. $SSN$
  3. $SSF$
  4. Priority based
in Operating System by Boss (30.7k points)
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(d) option answer
by Boss (20.1k points)
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Ans is A

Round Robin is the simplest algorithm for a pre-emptive scheduler. Only a single queue of processed is used. When the system timer fires, the next process in the queue is switched to, and the pre-empted process is put back into the queue.Round robin is pre-emptive version of FCFS, a queue is maintained which stores the input as it comes in FCFS order.
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