Operating Systems Concepts - Section 1 (2)

9.

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

Answer: Option A

Explanation:

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10.

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

Answer: Option C

Explanation:

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11.

Which of the following are(is) Language Processor(s)

A.	assembles
B.	compilers
C.	interpreters
D.	All of the above
E.	None of the above

Answer: Option D

Explanation:

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12.

A non-relocatable program is one which

A.	cannot 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

Answer: Option A

Explanation:

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13.

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

Answer: Option C

Explanation:

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14.

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

Answer: Option A

Explanation:

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15.

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

Answer: Option C

Explanation:

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16.

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

Answer: Option C

Explanation:

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