Operating System Questions

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441.

Which of the following program is not a utility?

A

Debugger

B

Editor

C

Spooler

D

All of the above

E

None of the above

Correct Answer: C

None.

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442.

The function(s) of file system is (are):

A

to provide complete file naming freedom to the users and to permit controlled sharing of files

B

to provide for long and short term storage of files with appropriate economic tradeoffs.

C

to provide security against loss of information due to system failure

D

all of the above

E

None of the above

Correct Answer: D

None.

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443.

A public key encryption system

A

allows anyone to decode the transmission

B

allows only the correct sender to decode the data

C

allows only the correct receiver to decode the data

D

does not encode the data before transmitting it

E

None of the above

Correct Answer: C

A public key encryption system allows only the correct receiver to decode the data.

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444.

Feed back queue

A

are very easy to implement

B

dispatch tasks according to execution characteristics

C

are used to favor real-time tasks

D

require manual intervention to implement properly

E

None of the above

Correct Answer: B

Feed back queue dispatch tasks according to execution characteristics.

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445.

In which addressing mode the operand is given explicitly in the instruction?

A

absolute mode

B

immediate mode

C

indirect mode

D

index mode

E

None of the above

Correct Answer: B

None.

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446.

The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:

A

time sharing

B

time out

C

time domain

D

FIFO

E

None of the above

Correct Answer: A

None.

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447.

Capacity planning

A

requires detailed system performance information

B

is independent of the operating system

C

does not depend on the monitoring tools available

D

is not needed in small installations

E

None of the above

Correct Answer: B

Capacity planning is independent of the operating system

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448.

Poor response times are caused by

A

Processor busy

B

High I/O rate

C

High paging rates

D

Any of the above

E

None of the above

Correct Answer: D

None.

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449.

Link encryption

A

is more secure than end-to-end encryption

B

is less secure than end-to-end encryption

C

can not be used in a public network

D

is used only to debug

E

None of the above

Correct Answer: B

Link encryption is less secure than end-to-end encryption. Link encryption is an approach to communications security that encrypts and decrypts all traffic at each network routing point (e.g. network switch, or node through which it passes) until arrival at its final destination.

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450.

A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as

A

multiprogramming

B

multithreading

C

broadcasting

D

time sharing

E

None of the above

Correct Answer: B

A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as multithreading

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