Operating System Mcqs

Page No. 3

The only state transition that is initiated by the user process itself is __________


ablock

✓


bwakeup

✖


cdispatch

✖


dnone of the mentioned

✖


View Answer block

The primary distinction between the short term scheduler and the long term scheduler is __________


aThe length of their queues

✖


bThe type of processes they schedule

✖


cThe frequency of their execution

✓


dNone of the mentioned

✖



What is a short-term scheduler?


aIt selects which process has to be brought into the ready queue

✖


bIt selects which process has to be executed next and allocates CPU

✓


cIt selects which process to remove from memory by swapping

✖


dNone of the mentioned

✖



What is a medium-term scheduler?


aIt selects which process has to be brought into the ready queue

✖


bIt selects which process has to be executed next and allocates CPU

✖


cIt selects which process to remove from memory by swapping

✓


dNone of the mentioned

✖



If all processes I/O bound, the ready queue will almost always be ______ and the Short term Scheduler will have a ______ to do.


afull, little

✖


bfull, lot

✖


cempty, little

✓


d empty, lot

✖


View Answer empty, little

What is a long-term scheduler?


aIt selects processes which have to be brought into the ready queue

✓


bIt selects processes which have to be executed next and allocates CPU

✖


cIt selects processes which heave to remove from memory by swapping

✖


dNone of the mentioned

✖



What will happen when a process terminates?


aIt is removed from all queues

✓


bIt is removed from all, but the job queue

✖


cIts process control block is de-allocated

✖


dIts process control block is never de-allocated

✖



When the process issues an I/O request __________


aIt is placed in an I/O queue

✓


bIt is placed in a waiting queue

✖


cIt is placed in the ready queue

✖


dIt is placed in the Job queue

✖



Which of the following do not belong to queues for processes?


aJob Queue

✖


bPCB queue

✓


cDevice Queue

✖


dReady Queue

✖


View Answer PCB queue

To enable a process to wait within the monitor __________


aa condition variable must be declared as condition

✓


bcondition variables must be used as boolean objects

✖


csemaphore must be used

✖


dall of the mentioned

✖



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