[Solved] Trace the sequence of events when two processes enter a deadlock state due to resource allocation. What happens immediately after both processes hold one resource and wait for the other? | Operating Systems

Operating Systems - Starvation vs Deadlock vs Livelock - Differences & Examples

Trace the sequence of events when two processes enter a deadlock state due to resource allocation. What happens immediately after both processes hold one resource and wait for the other?

ABoth processes remain blocked indefinitely, waiting for the other to release the resource.

BBoth processes release their held resources and retry immediately.

CThe operating system preempts one process to break the deadlock automatically.

DBoth processes enter a livelock, continuously retrying without progress.

Step-by-Step Solution

Step 1: Understand deadlock conditions
Deadlock occurs when each process holds a resource and waits for the other, causing indefinite blocking.
Step 2: Analyze the immediate aftermath
Neither process releases resources voluntarily, so both remain blocked indefinitely (both processes remain blocked indefinitely, waiting for the other to release the resource). Both processes releasing their held resources and retrying immediately is incorrect because processes do not release resources spontaneously. The operating system preempting one process to break the deadlock automatically is incorrect as OS preemption is not automatic in typical deadlock. Both processes entering a livelock, continuously retrying without progress describes livelock, which involves active state changes, not blocking.
Final Answer:
Option A -> Option A
Quick Check:
Deadlock means indefinite waiting without resource release, matching both processes remain blocked indefinitely, waiting for the other to release the resource.

Quick Trick: Deadlock = processes stuck waiting forever

Common Mistakes:

MISTAKES

Assuming OS automatically resolves deadlock
Confusing deadlock with livelock

Trap Explanation:

PITFALL

Option C is tempting because some systems can detect deadlock, but automatic preemption is not guaranteed. Option D confuses livelock with deadlock.

Interviewer Note:

CONTEXT

Tests candidate's understanding of deadlock behavior and process states.

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Solution Trace

More Operating Systems Quizzes

Trace the sequence of events when two processes enter a deadlock state due to resource allocation. What happens immediately after both processes hold one resource and wait for the other?

Step 1: Understand deadlock conditions

Step 2: Analyze the immediate aftermath

Final Answer:

Quick Check:

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