ITPEC FE Morning October 2023 Question 18
ITPEC FE Morning October 2023 — Question 18 of 80
Round Robin Scheduling — each process gets a fixed time slice in queue order.
When the interval-timer interrupt fires, the CPU switches to the next process in the ready queue. Every process gets an equal time quantum in circular order.
Why not others:
- (a) Priority Scheduling — allocates CPU by pre-assigned priority levels
- (b) Shortest Job First (SJF) — picks the process with the shortest processing time
- (d) Preemptive interrupt-driven — gives CPU to an urgent process on any interrupt (real-time scheduling)
Key rule: Round Robin = fixed time slice + timer interrupt + circular queue. Fair but not optimal for mixed workloads.
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