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2 Answers

Best answer
9 votes
9 votes
Multi level feedback queue favours IO bound process, because those process are idle for long time , their priority increases.

and also priority of cpu bound process decreases.

RR : irrespective of CPU or IO bound it will provide 1 time quantum to each process.

remaining option

FCFS: as it is non preemptive by nature , it favours cpu bound processes
6 votes
6 votes
CPU Bound process  means , the process which do not perform large I/O are CPU bound process, as those process spend most of their execution time in solving the problem in cpu rather than involving in reading/writing. CPU bound process would go faster if the CPU were faster.

RR is pre emptive .

FCFS is Non pre emptive .

Multilevel feedback queue is also pre emptive .

Now, preemption means there is a interrupt that implies number of I/O is high so preemptive process can not be CPU bound .

so option A, option D can not be possible as both deals with pre emptive process.

option C also can not be possible as it combines both RR and FCFS means combine both pre emptive and non preemptive.

FCFS is cpu bound as it is non pre emptive so number of I/O operation is none.

so only option B is correct  .
Answer:

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