Types Questions

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1.

Which one of the following is not a real time operating system?

A

VxWorks

B

Windows CE

C

RTLinux

D

Palm OS

Correct Answer: D

None.

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2.

The OS X has ____________

A

monolithic kernel

B

hybrid kernel

C

microkernel

D

monolithic kernel with modules

Correct Answer: B

None.

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3.

The systems which allow only one process execution at a time, are called __________

A

uniprogramming systems

B

uniprocessing systems

C

unitasking systems

D

none of the mentioned

Correct Answer: B

Those systems which allows more than one process execution at a time, are called multiprogramming systems. Uniprocessing means only one processor.

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4.

In real time operating system ____________

A

all processes have the same priority

B

a task must be serviced by its deadline period

C

process scheduling can be done only once

D

kernel is not required

Correct Answer: B

None.

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5.

Hard real time operating system has ______________ jitter than a soft real time operating system.

A

less

B

more

C

equal

D

none of the mentioned

Correct Answer: A

Jitter is the undesired deviation from the true periodicity.

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6.

For real time operating systems, interrupt latency should be ____________

A

minimal

B

maximum

C

zero

D

dependent on the scheduling

Correct Answer: A

Interrupt latency is the time duration between the generation of interrupt and execution of its service.

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7.

Which one of the following is a real time operating system?

A

RTLinux

B

VxWorks

C

Windows CE

D

All of the mentioned

Correct Answer: D

None.

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8.

VxWorks is centered around ____________

A

wind microkernel

B

linux kernel

C

unix kernel

D

none of the mentioned

Correct Answer: A

None.

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9.

What is the disadvantage of real addressing mode?

A

there is a lot of cost involved

B

time consumption overhead

C

absence of memory protection between processes

D

restricted access to memory locations by processes

Correct Answer: C

None.

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10.

In a real time system the computer results ____________

A

must be produced within a specific deadline period

B

may be produced at any time

C

may be correct

D

all of the mentioned

Correct Answer: A

None.

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