Operating System Multiple Choice Questions – RTOS

This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Real Time Operating System (RTOS)”.

1. 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
View Answer

Answer: b
Explanation: None.

2. 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
View Answer

Answer: a
Explanation: Jitter is the undesired deviation from the true periodicity.

3. For real time operating systems, interrupt latency should be ____________
a) minimal
b) maximum
c) zero
d) dependent on the scheduling
View Answer

Answer: a
Explanation: Interrupt latency is the time duration between the generation of interrupt and execution of its service.
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4. In rate monotonic scheduling ____________
a) shorter duration job has higher priority
b) longer duration job has higher priority
c) priority does not depend on the duration of the job
d) none of the mentioned
View Answer

Answer: a
Explanation: None.

5. In which scheduling certain amount of CPU time is allocated to each process?
a) earliest deadline first scheduling
b) proportional share scheduling
c) equal share scheduling
d) none of the mentioned
View Answer

Answer: b
Explanation: None.
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6. The problem of priority inversion can be solved by ____________
a) priority inheritance protocol
b) priority inversion protocol
c) both priority inheritance and inversion protocol
d) none of the mentioned
View Answer

Answer: a
Explanation: None.

7. Time duration required for scheduling dispatcher to stop one process and start another is known as ____________
a) process latency
b) dispatch latency
c) execution latency
d) interrupt latency
View Answer

Answer: b
Explanation: None.
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8. Time required to synchronous switch from the context of one thread to the context of another thread is called?
a) threads fly-back time
b) jitter
c) context switch time
d) none of the mentioned
View Answer

Answer: c
Explanation: None.

9. Which one of the following is a real time operating system?
a) RTLinux
b) VxWorks
c) Windows CE
d) All of the mentioned
View Answer

Answer: d
Explanation: None.
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10. VxWorks is centered around ____________
a) wind microkernel
b) linux kernel
c) unix kernel
d) none of the mentioned
View Answer

Answer: a
Explanation: None.

More MCQs on RTOS:

Sanfoundry Global Education & Learning Series – Operating System.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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