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Question 81Asked in BEL PE Computer Science, 20 Dec 2025 (5:00 PM)

In an FCFS-scheduled system, five processes arrive at time 0:

In an FCFS-scheduled system, five processes arrive at time 0: P1 (CPU-bound, 20 ms) and P2–P5 (I/O-bound, 2–5 ms). Which outcome is most likely under FCFS?
  1. ACPU utilization improves because short processes preempt the long one.
  2. BAverage waiting time becomes minimal for all processes.
  3. CContext switching increases as I/O-bound processes repeatedly interrupt P1.
  4. DI/O-bound processes face starvation due to the convoy effect caused by P1.
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Correct answer: (D) I/O-bound processes face starvation due to the convoy effect caused by P1.

From BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM)

This is question 81 of BEL PE Computer Science PYQ, 20 Dec 2025 (5:00 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.