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In a scenario where philosophers pick forks in random order but release forks after a timeout, what is the likely system behavior?

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Operating Systems - Dining Philosophers - Problem, Deadlock & Solution
In a scenario where philosophers pick forks in random order but release forks after a timeout, what is the likely system behavior?
AStarvation can occur despite timeout
BDeadlock is impossible due to timeout releases
CSystem guarantees fairness and no starvation
DTimeout causes immediate deadlock recovery always
Step-by-Step Solution
Solution:

  1. Step 1: Understand timeout effect

    Timeout forces release of forks, preventing permanent deadlock.

  2. Step 2: Analyze starvation risk

    Random order and timeout can cause some philosophers to repeatedly fail to acquire forks, leading to starvation.

  3. Step 3: Evaluate fairness

    Timeout alone doesn't guarantee fairness or starvation freedom.

  4. Final Answer:

    Option A -> Option A

  5. Quick Check:

    Timeout prevents deadlock but not starvation [OK]
Quick Trick: Timeout avoids deadlock but not starvation [OK]
Common Mistakes:
MISTAKES
  • Assuming timeout guarantees no starvation
  • Believing timeout causes immediate recovery always
  • Confusing deadlock prevention with fairness
Trap Explanation:
PITFALL
  • Candidates often conflate deadlock prevention with starvation freedom, overlooking fairness issues.
Interviewer Note:
CONTEXT
  • Checks nuanced understanding of timeout-based deadlock mitigation.
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