Dr. P. Anandan: Four Conditions for Deadlock Quiz
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Questions and Answers

Why is it recommended to avoid locks in a multi-core processor environment?

  • Locks limit scalability (correct)
  • Locks simplify the code
  • Locks improve performance
  • Locks ensure thread progress

    • What is the primary benefit of using a lock-free data structure in a multi-core processor?

  • Limits performance gains
  • Guarantees system-wide progress (correct)
  • Increases parallel execution time
  • Causes threads to indefinitely wait

    • How does a non-blocking algorithm differ from a lock-free algorithm?

  • Decays performance
  • Guarantees per-thread progress (correct)
  • Allows threads to be indefinitely blocked
  • Ensures system-wide progress

    • In the context of multiprocessing, what is the significance of a lock-free coordination approach?

    <p>Facilitates shared data access without blocking threads</p> Signup and view all the answers

    Which statement accurately describes a lock-free algorithm in terms of progress guarantee?

    <p>System-wide progress is guaranteed</p> Signup and view all the answers

    Why is it important to use a non-blocking algorithm in symmetric multiprocessing systems?

    <p>Prevents threads from indefinite postponement</p> Signup and view all the answers

    Which type of multiprocessing is most susceptible to deadlock?

    <p>Symmetric multiprocessing</p> Signup and view all the answers

    Which condition for deadlock is NOT addressed by lock-free coordination techniques?

    <p>Circular wait</p> Signup and view all the answers

    Which multiprocessing system would be least likely to experience a deadlock?

    <p>Asymmetric multiprocessing with resource partitioning</p> Signup and view all the answers

    When addressing deadlocks in multiprocessing systems, which condition is the most difficult to prevent?

    <p>Circular wait</p> Signup and view all the answers

    Which type of multiprocessing system would benefit the most from lock-free coordination techniques?

    <p>Symmetric multiprocessing with shared resources</p> Signup and view all the answers

    What type of multiprocessing is being demonstrated in the provided text?

    <p>Symmetric multiprocessing</p> Signup and view all the answers

    What is the purpose of the 'TestAndSet' function used in the provided text?

    <p>To atomically read and write a value to a variable</p> Signup and view all the answers

    What is the result of executing the 'TestAndSet' function in the provided text when the lock variable is already set?

    <p>The function returns 1 and the lock variable remains set</p> Signup and view all the answers

    What is the significance of the 'lock' variable in the provided text?

    <p>It is used to synchronize the execution of multiple processes</p> Signup and view all the answers

    What is the main difference between the locking mechanism demonstrated in the provided text and lock-free coordination?

    <p>Locking mechanisms use a centralized resource, while lock-free coordination uses a decentralized approach</p> Signup and view all the answers

    What is the main advantage of using the Bakery Algorithm over the locking mechanism demonstrated in the provided text?

    <p>The Bakery Algorithm is more scalable than locking mechanisms</p> Signup and view all the answers

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