Operating System Questions

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461.

Block or buffer caches are used

A

to improve disk performance

B

to handle interrupts

C

to increase the capacity of main memory

D

to speed up main memory read operation

E

None of the above

Correct Answer: A

Block or buffer caches are used to improve disk performance.

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462.

The practice of "bundling" refers to

A

selling computers alone

B

selling peripheral devices with computer

C

selling software to run on computers

D

giving away software with a computer purchase

E

None of the above

Correct Answer: D

None.

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463.

Special software to create a job queue is called a

A

Drive

B

Spooler

C

Interpreter

D

Linkage editor

E

None of the above

Correct Answer: B

Special software to create a job queue is called a spooler

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464.

All the time a computer is switched on, its operating system software has to stay in

A

main storage

B

primary storage

C

floppy disk

D

disk drive

E

None of the above

Correct Answer: B

All the time a computer is switched on, its operating system software has to stay in primary storage

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465.

Can you name of the major Operating System used in computers?

A

MS DOS

B

OS/2

C

UNIX

D

All of the above

E

None of the above

Correct Answer: D

None.

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466.

Which of the following is not an advantage of multiprogramming?

A

increased throughput

B

shorter response time

C

decreased operating-system overhead

D

ability to assign priorities to jobs

E

None of the above

Correct Answer: C

None.

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467.

Virtual Memory

A

is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.

B

consists of those addresses that may be generated by a processor during execution of a computation.

C

is a method of allocating processor time.

D

allows multiple programs to reside in separate areas of core at the time.

E

None of the above

Correct Answer: B

Virtual Memory consists of those addresses that may be generated by a processor during execution of a computation.

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468.

In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into

A

periods

B

sectors

C

zones

D

groups

E

None of the above

Correct Answer: B

In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into sectors

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469.

The total time to prepare a disk drive mechanism for a block of data to be read from it is

A

latency

B

latency plus transmission time

C

latency plus seek time

D

latency plus seek time plus transmission time

E

None of the above

Correct Answer: C

The total time to prepare a disk drive mechanism for a block of data to be read from it is latency plus seek time

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470.

Part of a program where the shared memory is accessed and which should be executed invisibly is called

A

semaphores

B

directory

C

critical section

D

mutual exclusion

E

None of the above

Correct Answer: C

Part of a program where the shared memory is accessed and which should be executed invisibly is called critical section

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