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MCQ

Q.

What is the Optimal page-replacement algorithm?

A

Replace the page that has not been used for a long time

B

Replace the page that has been used for a long time

C

Replace the page that will not be used for a long time

D

None of the mentioned

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MCQ

1.

When memory is divided into several fixed sized partitions, each partition may contain ________

A

exactly one process

B

at least one process

C

multiple processes at once

D

none of the mentioned

Discussion

MCQ

2.

The _________ time in a swap out of a running process and swap in of a new process into the memory is very high.

A

context-switch

B

waiting

C

execution

D

all of the mentioned

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3.

The valid

A

the page is not legal

B

the page is illegal

C

the page is in memory

D

the page is not in memory

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4.

One problem with the global replacement algorithm is that ____________

A

it is very expensive

B

many frames can be allocated to a process

C

only a few frames can be allocated to a process

D

a process cannot control its own page-fault rate

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5.

Memory management technique in which system stores and retrieves data from secondary storage for use in main memory is called?

A

fragmentation

B

paging

C

mapping

D

none of the mentioned

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