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What is the objective of multiprogramming?

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What is the objective of multiprogramming?

(a) Have a process running at all time

(b) Have multiple programs waiting in a queue ready to run

(c) To increase CPU utilization

(d) None of the mentioned

The question was posed to me at a job interview.

The doubt is from Process Control Block topic in portion Processes of Operating System

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Correct answer is (c) To increase CPU utilization

The explanation is: The objective of multiprogramming is to increase CPU utilization. Generally, a single process cannot use CPU or I/O at all time, whenever CPU or I/O is available another process can use it. Multiprogramming offers this ability to OS by keeping multiple programs in a ready queue.

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