Deadlocks Lecture 6: System Model and Handling Methods
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Questions and Answers

In the context of deadlock, what is the meaning of 'Mutual Exclusion'?

  • Only one process at a time can use a resource (correct)
  • Processes can forcibly take over a resource from another process
  • Processes must take turns using a resource
  • Multiple processes can use a resource simultaneously

How is 'Hold and Wait' characteristic related to deadlock?

  • Processes never hold any resources during execution
  • Processes hold at least one resource and wait for additional resources held by other processes (correct)
  • Processes hold resources without waiting for others
  • Processes immediately release all held resources

What is the significance of 'No Preemption' in the context of deadlocks?

  • Resources are automatically released after a certain time period
  • Resources are preemptively taken from other processes
  • Processes can forcibly release resources from other processes
  • Resources can only be released voluntarily by the process holding it (correct)

What is an example of 'Hold and Wait' scenario in real life?

<p>A person cooking a meal using multiple ingredients (D)</p> Signup and view all the answers

How does 'Bridge Crossing Example' illustrate deadlock resolution?

<p>By preempting resources and rolling back if a deadlock occurs (A)</p> Signup and view all the answers

What is the primary problem in a deadlock situation?

<p>One process holding a resource and waiting to acquire another resource held by another process (D)</p> Signup and view all the answers

Which condition can lead to the occurrence of a deadlock?

<p>A process holding at least one resource and waiting for additional resources held by other processes (D)</p> Signup and view all the answers

What is the meaning of 'Mutual Exclusion' in the context of deadlocks?

<p>Only one process at a time can use a resource (D)</p> Signup and view all the answers

How can a deadlock be resolved in the context of the 'Bridge Crossing Example'?

<p>By preempting resources and rolling back (A)</p> Signup and view all the answers

Which approach involves preventing a deadlock by ensuring that the four necessary conditions for deadlock do not hold simultaneously?

<p>Deadlock Avoidance (A)</p> Signup and view all the answers

What is the primary characteristic that can lead to a deadlock?

<p>Hold and Wait (B)</p> Signup and view all the answers

In the context of deadlocks, what does 'No Preemption' mean?

<p>A process can release a resource only after completion of its task (B)</p> Signup and view all the answers

Which example illustrates the concept of deadlock resolution through preempting resources and rollback?

<p>Bridge Crossing Example (C)</p> Signup and view all the answers

What is the significance of 'Mutual Exclusion' in the context of deadlocks?

<p>Only one process at a time can use a resource (C)</p> Signup and view all the answers

Which condition contributes to a process holding at least one resource and waiting to acquire additional resources held by other processes?

<p>Hold and Wait (D)</p> Signup and view all the answers

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