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MCQ

For an effective operating system, when to check for deadlock?

every time a resource request is made

at fixed time intervals

every time a resource request is made at fixed time intervals

none of the mentioned

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MCQ

Consider the methods used by processes P1 and P2 for accessing their critical sections whenever needed, as given below. The initial values of shared boolean variables S1 and S2 are randomly assigned.

Method used by P1 :
while(S1==S2);
Critical section
S1 = S2;
 
Method used by P2 :
while(S1!=S2);
Critical section
S2 = not(S1);

Which of the following statements describes properties achieved?

Mutual exclusion but not progress

Progress but not mutual exclusion

Neither mutual exclusion nor progress

Both mutual exclusion and progress

Discussion

MCQ

The process to be aborted is chosen on the basis of the following factors?

priority of the process

process is interactive or batch

how long the process has computed

all of the mentioned

Discussion

MCQ

To enable a process to wait within the monitor __________

a condition variable must be declared as condition

condition variables must be used as boolean objects

semaphore must be used

all of the mentioned

Discussion

MCQ

For non sharable resources like a printer, mutual exclusion ____________

must exist

must not exist

may exist

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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Types

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Structures

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Process Synchronization

Memory Management

Storage Management

Input Output Systems

Networking

Distributed Operating System

Protection and Security

Unix

Linux

MS Windows

Mixed

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Finding and Processing Files

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