Question Discussion & Solution

MCQ

For a deadlock to arise, which of the following conditions must hold simultaneously?

Mutual exclusion

No preemption

Hold and wait

All of the mentioned

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MCQ

To ensure that the hold and wait condition never occurs in the system, it must be ensured that ____________

whenever a resource is requested by a process, it is not holding any other resources

each process must request and be allocated all its resources before it begins its execution

a process can request resources only when it has none

all of the mentioned

Discussion

MCQ

One way to ensure that the circular wait condition never holds is to ____________

impose a total ordering of all resource types and to determine whether one precedes another in the ordering

to never let a process acquire resources that are held by other processes

to let a process wait for only one resource at a time

all of the mentioned

Discussion

MCQ

Bounded waiting implies that there exists a bound on the number of times a process is allowed to enter its critical section ____________

after a process has made a request to enter its critical section and before the request is granted

when another process is in its critical section

before a process has made a request to enter its critical section

none of the mentioned

Discussion

MCQ

What is a mutex?

is a binary mutex

must be accessed from only one process

can be accessed from multiple processes

none of the mentioned

Discussion

MCQ

A deadlock can be broken by ____________

abort one or more processes to break the circular wait

abort all the process in the system

preempt all resources from all processes

none of the mentioned

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