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Module 2: Processes & Scheduling

20232m

Suppose that a process is in BLOCKED state waiting for some I/O service. When the service is completed, it goes to the?
(i) RUNNING state
(ii) READY state
(iii) SUSPENDED state
(iv) TERMINATED state

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Answer: (ii) READY state

State transition: RUNNING → BLOCKED (waiting for I/O). On I/O completion, interrupt moves process to READY, not directly to RUNNING — it must be rescheduled by short-term scheduler. BLOCKED → READY → RUNNING.

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