Operating System Questions

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411.

Which of the following is not true about documentation?

A

Documentation, of a system, should be as clear and direct as possible

B

Documentation increases the maintenance time and cost

C

Documentation gives better understanding of the problem

D

All of the above

E

None of the above

Correct Answer: B

None.

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412.

Scheduling is

A

allowing jobs to use the processor

B

unrelated to performance consideration

C

not required in uniprocessor systems

D

the same regard-less of the purpose of the system

E

None of the above

Correct Answer: A

The process scheduling is the activity of the process manager that handles the removal of the running process from the CPU and the selection of another process on the basis of a particular strategy. Process scheduling is an essential part of Multiprogramming operating systems.

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413.

What scheduling algorithm allows processes that are logical runnable to be temporarily suspended?

A

preemptive scheduling

B

non-preemptive scheduling

C

FIFO

D

FCFS

E

None of the above

Correct Answer: A

Preemptive Scheduling: A scheduling discipline is preemptive if, once a process has been given the CPU can taken away. The strategy of allowing processes that are logically runable to be temporarily suspended is called Preemptive Scheduling and it is contrast to the "run to completion" method.

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414.

In an absolute loading scheme, which loader function is accomplished by the loader

A

Reallocation

B

Allocation

C

Linking

D

Loading

E

None of the above

Correct Answer: D

In an absolute loading scheme, Loading function is accomplished by the loader

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415.

The computational technique used to compute the disk storage address of individual records is called:

A

bubble memory

B

key fielding

C

dynamic reallocation

D

hashing

E

None of the above

Correct Answer: D

The computational technique used to compute the disk storage address of individual records is called hashing.

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416.

For how many processes which are sharing common data, the Dekker's algorithm implements mutual exclusion?

A

1

B

2

C

3

D

4

E

None of the above

Correct Answer: B

Dekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra in an unpublished paper on sequential process descriptions and his manuscript on cooperating sequential processes.

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417.

The file structure that redefines its first record at a base of zero uses the term:

A

relative organization

B

key fielding

C

dynamic reallocation

D

hashing

E

None of the above

Correct Answer: A

None.

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418.

What is the name given to all the programs inside the computer with makes it usable?

A

Application software

B

System software

C

Firm ware

D

Shareware

E

None of the above

Correct Answer: B

None.

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419.

Semaphores

A

synchronize critical resources to prevent deadlock

B

synchronize critical resources to prevent contention

C

are used to do I/O

D

are used for memory management

E

None of the above

Correct Answer: A

Semaphores synchronize critical resources to prevent deadlock

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420.

The advantage(s) of incorporating the macro processor into pass 1 is(are):

A

many functions do not have to be implemented twice.

B

Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.

C

more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.

D

all of the above

E

None of the above

Correct Answer: D

None.

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