Operating Systems - Process State Machine - Five-State Model
Consider a process that is preempted by the scheduler while running. What is the correct sequence of state transitions that occur immediately after preemption until the process runs again?
Consider a process that is preempted by the scheduler while running. What is the correct sequence of state transitions that occur immediately after preemption until the process runs again?
medium🧠🧾 Concept Trace Q4 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify preemption effect
Preemption moves a process from Running to Ready, as it is temporarily stopped but still ready to run.Step 2: Process waits in Ready queue
The process remains in Ready until scheduled again.Step 3: Scheduler dispatches process
Process moves from Ready back to Running.Final Answer:
Option B -> Option BQuick Check:
Preemption causes Running->Ready->Running [OK]
Quick Trick: Preemption moves Running to Ready, not Waiting [OK]
Common Mistakes:
MISTAKES- Confusing preemption with I/O wait
- Including Terminated incorrectly
- Assuming Waiting state after preemption
Trap Explanation:
PITFALL- Candidates often mistake preemption as causing Waiting state instead of Ready.
Interviewer Note:
CONTEXT- Checks understanding of preemption and scheduling effects on process states.
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