Memory Management Questions

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51.

The first fit, best fit and worst fit are strategies to select a ______

A

process from a queue to put in memory

B

processor to run the next process

C

free hole from a set of available holes

D

all of the mentioned

Correct Answer: C

None.

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52.

In internal fragmentation, memory is internal to a partition and ____________

A

is being used

B

is not being used

C

is always used

D

none of the mentioned

Correct Answer: B

None.

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53.

A solution to the problem of external fragmentation is ____________

A

compaction

B

larger memory space

C

smaller memory space

D

none of the mentioned

Correct Answer: A

None.

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54.

Another solution to the problem of external fragmentation problem is to ____________

A

permit the logical address space of a process to be noncontiguous

B

permit smaller processes to be allocated memory at last

C

permit larger processes to be allocated memory at last

D

all of the mentioned

Correct Answer: A

None.

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55.

If relocation is static and is done at assembly or load time, compaction _________

A

cannot be done

B

must be done

C

must not be done

D

can be done

Correct Answer: A

None.

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56.

The disadvantage of moving all process to one end of memory and all holes to the other direction, producing one large hole of available memory is ____________

A

the cost incurred

B

the memory used

C

the CPU used

D

all of the mentioned

Correct Answer: A

None.

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57.

__________ is generally faster than _________ and _________

A

first fit, best fit, worst fit

B

best fit, first fit, worst fit

C

worst fit, best fit, first fit

D

none of the mentioned

Correct Answer: A

None.

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58.

External fragmentation exists when?

A

enough total memory exists to satisfy a request but it is not contiguous

B

the total memory is insufficient to satisfy a request

C

a request cannot be satisfied even when the total memory is free

D

none of the mentioned

Correct Answer: A

None.

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59.

External fragmentation will not occur when?

A

first fit is used

B

best fit is used

C

worst fit is used

D

no matter which algorithm is used, it will always occur

Correct Answer: D

None.

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60.

Sometimes the overhead of keeping track of a hole might be ____________

A

larger than the memory

B

larger than the hole itself

C

very small

D

all of the mentioned

Correct Answer: B

None.

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