Memory Management Questions

MCQ bookmark_border

161.

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

Correct Answer: D

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

162.

________ replacement generally results in greater system throughput.

A

Local

B

Global

C

Universal

D

Public

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

163.

A process is thrashing if ____________

A

it spends a lot of time executing, rather than paging

B

it spends a lot of time paging than executing

C

it has no memory allocated to it

D

none of the mentioned

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

164.

Thrashing _______ the CPU utilization.

A

increases

B

keeps constant

C

decreases

D

none of the mentioned

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

165.

What is a locality?

A

a set of pages that are actively used together

B

a space in memory

C

an area near a set of processes

D

none of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

166.

When a subroutine is called ____________

A

it defines a new locality

B

it is in the same locality from where it was called

C

it does not define a new locality

D

none of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

167.

A program is generally composed of several different localities, which _____ overlap.

A

may

B

must

C

do not

D

must not

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

168.

In the working set model, for:
2 6 1 5 7 7 7 7 5 1 6 2 3 4 1 2 3 4 4 4 3 4 3 4 4 4 1 3 2 3
if DELTA = 10, then the working set at time t1 (

A

{1, 2, 4, 5, 6}

B

{2, 1, 6, 7, 3}

C

{1, 6, 5, 7, 2}

D

{1, 2, 3, 4, 5}

Correct Answer: C

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

169.

The accuracy of the working set depends on the selection of ____________

A

working set model

B

working set size

C

memory size

D

number of pages in memory

Correct Answer: B

None.

Check Answer report_problem Report forum Discussion

MCQ bookmark_border

170.

If working set window is too small ____________

A

it will not encompass entire locality

B

it may overlap several localities

C

it will cause memory problems

D

none of the mentioned

Correct Answer: A

None.

Check Answer report_problem Report forum Discussion