Memory Management Questions

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31.

CPU fetches the instruction from memory according to the value of ____________

A

program counter

B

status register

C

instruction register

D

program status word

Correct Answer: A

None.

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32.

A memory buffer used to accommodate a speed differential is called ____________

A

stack pointer

B

cache

C

accumulator

D

disk buffer

Correct Answer: B

None.

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33.

Which one of the following is the address generated by CPU?

A

physical address

B

absolute address

C

logical address

D

none of the mentioned

Correct Answer: C

None.

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34.

Run time mapping from virtual to physical address is done by ____________

A

Memory management unit

B

CPU

C

PCI

D

None of the mentioned

Correct Answer: A

None.

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35.

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

Correct Answer: B

None.

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36.

The address of a page table in memory is pointed by ____________

A

stack pointer

B

page table base register

C

page register

D

program counter

Correct Answer: B

None.

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37.

Program always deals with ____________

A

logical address

B

absolute address

C

physical address

D

relative address

Correct Answer: A

None.

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38.

The page table contains ____________

A

base address of each page in physical memory

B

page offset

C

page size

D

none of the mentioned

Correct Answer: A

None.

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39.

What is compaction?

A

a technique for overcoming internal fragmentation

B

a paging technique

C

a technique for overcoming external fragmentation

D

a technique for overcoming fatal error

Correct Answer: C

None.

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40.

Operating System maintains the page table for ____________

A

each process

B

each thread

C

each instruction

D

each address

Correct Answer: A

None.

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