One necessary condition for deadlock is ____, which states that at least one resource must be held in a nonsharable mode.
A) hold and wait
B) mutual exclusion
C) circular wait
D) no preemption

Question

Quizplus · Accepted Answer

Mutual exclusion is a necessary condition for deadlock as it implies that only one process can use a resource at a time, so if one process is holding a resource, no other process can use it until the first process releases it. This can lead to a situation where a process is waiting for a resource held by another process, while also holding a resource that the other process needs, resulting in a circular wait and ultimately deadlock. Hold and wait and no preemption are also necessary conditions for deadlock, but they are not specific to nonsharable resources.

One Necessary Condition for Deadlock Is ____, Which States That