Deadlock Prevention, Avoidance, and Detection

Question 1

At least one resource must be held in a non-sharable mode. This means that only one (1) thread at a time can use the resource. If another thread requests that specific resource, the requesting thread must be delayed until the resource has been released.

Answer 1

Mutual exclusion

Question 2

A thread must be holding at least one (1) resource and waiting to acquire additional resources that are currently being held by other threads

Answer 2

Hold and wait

Question 3

Resources cannot be preempted. This means that a resource can only be released voluntarily by the thread holding it after that thread has completed its task.

Answer 3

No preemption

Question 4

A closed chain of threads exists, such that each thread holds at least one resource neeeded by the next thread in the chain.

Answer 4

Circular wait