Process State Transitions List-I A. Ready Running B. Running Ready C. Running Waiting D. Waiting Ready List-II I/O operation completion or event occurrence. Process requests an I/O device or synchronous resource. Short-Term Scheduler dispatch action. Time quantum expiration or higher priority preemption.

A - 3, B - 4, C - 2, D - 1 Explanation: A. Ready Running 3 (Short-Term Scheduler dispatch action.): A process in the Ready state moves to the Running state when the Short-Term Scheduler (CPU Scheduler) selects and dispatches it to execution on the CPU. B. Running Ready 4 (Time quantum expiration or higher priority preemption.): A running process is moved back to the Ready queue when its allocated CPU time slice expires or when a higher-priority process preempts it. C. Running Waiting 2 (Process requests an I/O device or synchronous resource.): A process voluntarily leaves the CPU and enters the Waiting (Blocked) state when it requests an I/O operation or needs to wait for a resource/event. D. Waiting Ready 1 (I/O operation completion or event occurrence.): Once the requested I/O operation finishes or the event occurs, the proces

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CUET PG 2026 — operating system os PYQ

CUET PG | operating system os | 2026

Process State Transitions

List-I

A. Ready $\to$ Running

B. Running $\to$ Ready

C. Running $\to$ Waiting

D. Waiting $\to$ Ready

List-II

I/O operation completion or event occurrence.

Process requests an I/O device or synchronous resource.

Short-Term Scheduler dispatch action.

Time quantum expiration or higher priority preemption.

Choose the correct answer: