Operating System Questions

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341.

In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with

A

recognition of basic syntactic constructs through reductions.

B

recognition of basic elements and creation of uniform symbols

C

creation of more optional matrix.

D

use of macro processor to produce more optimal assembly code

E

None of the above

Correct Answer: B

In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with recognition of basic elements and creation of uniform symbols.

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342.

Resolution of externally defined symbols is performed by

A

Linker

B

Loader

C

Compiler

D

Assembler

E

None of the above

Correct Answer: A

Resolution of externally defined symbols is performed by Linker

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343.

System generation:

A

is always quite simple

B

is always very difficult

C

varies in difficulty between systems

D

requires extensive tools to be understandable

E

None of the above

Correct Answer: C

System generation varies in difficulty between systems

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344.

The Memory Address Register

A

is a hardware memory device which denotes the location of the current instruction being executed.

B

is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

C

contains the address of the memory location that is to be read from or stored into.

D

contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".

E

None of the above

Correct Answer: C

The Memory Address Register contains the address of the memory location that is to be read from or stored into.

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345.

In virtual memory systems, Dynamic address translation

A

is the hardware necessary to implement paging

B

stores pages at a specific location on disk

C

is useless when swapping is used

D

is part of the operating system paging algorithm

E

None of the above

Correct Answer: A

In virtual memory systems, Dynamic address translation is the hardware necessary to implement paging

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346.

Fragmentation of the file system

A

occurs only if the file system is used improperly

B

can always be prevented

C

can be temporarily removed by compaction

D

is a characteristic of all file systems

E

None of the above

Correct Answer: C

Fragmentation of the file system can be temporarily removed by compaction

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347.

A non-relocatable program is one which

A

can not be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.

B

consists of a program and relevant information for its relocation.

C

can itself performs the relocation of its address-sensitive portions.

D

all of the above

E

None of the above

Correct Answer: A

A non-relocatable program is one which can not be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.

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348.

In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list?

A

index addressing

B

indirect addressing

C

auto increment

D

auto decrement

E

None of the above

Correct Answer: C

None.

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349.

The memory allocation scheme subject to "external" fragmentation is

A

segmentation

B

swapping

C

pure demand paging

D

multiple contiguous fixed partitions

E

None of the above

Correct Answer: A

The memory allocation scheme subject to "external" fragmentation is segmentation.

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350.

While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?

A

DISKCOPY

B

COPY

C

RENAME

D

FORMAT

E

None of the above

Correct Answer: B

Working with MS-DOS, 'COPY' command will you use to transfer a specific file from one disk to another?

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