Operating System Questions

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481.

Virtual memory is

A

simple to implement

B

used in all major commercial operating systems

C

less efficient in utilization of memory

D

useful when fast I/O devices are not available

E

None of the above

Correct Answer: B

Virtual memory is used in all major commercial operating systems

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482.

Object code

A

is ready to execute

B

is the output of compilers, but not assemblers

C

must be "loaded" before execution

D

must be rewritten before execution

E

None of the above

Correct Answer: C

Object code must be "loaded" before execution

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483.

The term "operating system" means

A

a set of programs which controls computer working

B

the way a computer operator works

C

conversion of high level language into machine code

D

the way a floppy disk drive operates

E

None of the above

Correct Answer: A

The term "operating system" means a set of programs which controls computer working.

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484.

Indicate which is a pre-emptive scheduling algorithm

A

Round-robin

B

Shortest-job-next

C

Priority-based

D

All of the above

E

None of the above

Correct Answer: A

Round-robin is a pre-emptive scheduling algorithm.

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485.

Which of the following, is necessary to work on a computer

A

Compiler

B

Operating system

C

Assembly

D

Interpreter of the above

E

None of the above

Correct Answer: B

Operating system is necessary to work on a computer.

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486.

Access time is the highest in the case of

A

floppy disk

B

cache

C

swapping devices

D

magnetic disk

E

None of the above

Correct Answer: D

Access time is the highest in the case of magnetic disk

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487.

Which of the following is not a characteristic of a daisy chaining priority control scheme?

A

priority is programmable

B

it is relatively easy to add more devices to the chain

C

the failure of one device may affect other devices on the chain

D

the number of control lines is independent of the number of devices on the chain

E

None of the above

Correct Answer: A

None.

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488.

Assembler is

A

a program that places programs into memory and prepares them for execution.

B

a program that automate the translation of assembly language into machine language.

C

a program that accepts a program written in a high level language and produces an object program.

D

is a program that appears to execute a source program as if it were machine language.

E

None of the above

Correct Answer: B

None.

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489.

Indicate which, of the following, in not true about an interpreter

A

Interpreter generates an object program from the source program

B

Interpreter is a kind of translator

C

Interpreter analyses each source statement every time it is to be executed

D

All of the above

E

None of the above

Correct Answer: A

None.

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490.

Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an

A

operating system

B

loader

C

linker

D

compiler

E

None of the above

Correct Answer: C

None.

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