Processes Questions

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21.

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

A

full, little

B

full, lot

C

empty, little

D

empty, lot

Correct Answer: C

None.

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22.

What is a medium-term scheduler?

A

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

B

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

C

It selects which process to remove from memory by swapping

D

None of the mentioned

Correct Answer: C

None.

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23.

What is a short-term scheduler?

A

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

B

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

C

It selects which process to remove from memory by swapping

D

None of the mentioned

Correct Answer: B

None.

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24.

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

A

The length of their queues

B

The type of processes they schedule

C

The frequency of their execution

D

None of the mentioned

Correct Answer: C

None.

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25.

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

A

block

B

wakeup

C

dispatch

D

none of the mentioned

Correct Answer: A

None.

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26.

In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the __________

A

Blocked state

B

Ready state

C

Suspended state

D

Terminated state

Correct Answer: B

None.

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27.

In a multiprogramming environment __________

A

the processor executes more than one process at a time

B

the programs are developed by more than one person

C

more than one process resides in the memory

D

a single user can execute many programs at the same time

Correct Answer: C

None.

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28.

state waiting for some I/O service. When the service is completed, it goes to the __________

A

Running state

B

Ready state

C

Suspended state

D

Terminated state

Correct Answer: B

None.

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29.

The context of a process in the PCB of a process does not contain __________

A

the value of the CPU registers

B

the process state

C

memory

D

context switch time

Correct Answer: D

None.

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30.

Which of the following need not necessarily be saved on a context switch between processes?

A

General purpose registers

B

Translation lookaside buffer

C

Program counter

D

All of the mentioned

Correct Answer: B

None.

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