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Frequently Asked Operating System interview questions and answers for freshers

(#M40029499) OPERATING SYSTEM QUESTION operating system Keep an EYE

What are the reasons for process suspension?
1) swapping
2) interactive user request
3) timing
4) parent process request

Asked In Operating System MAN (7 years ago)

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(#M40029485) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is a device queue?

A. A list of processes waiting for a particular I/O device is called device queue.

Asked In Operating System MAN (7 years ago)

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(#M40152806) OPERATING SYSTEM QUESTION Keep an EYE

No. of pages are given and using LRU algorithm we have to find the number of page faults.
a) 2 b) 6 c) 5 d)7

Asked In Operating System Nakshatra Mukhopadhyay (5 years ago)

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(#M40029488) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What are the disadvantages of context switching?

A. Time taken for switching from one process to other is pure over head. Because the system does no
useful work while switching. So one of the solutions is to go for threading when ever possible.

Asked In Operating System MAN (7 years ago)

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(#M40029489) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is a data register and address register?

A. Data registers - can be assigned to a variety of functions by the programmer. They can be used with
any machine instruction that performs operations on data.
Address registers - contain main memory addresses of data and instructions or they contain a portion
of the address that is used in the calculation of the complete addresses.

Asked In Operating System MAN (7 years ago)

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(#M40029447) OPERATING SYSTEM QUESTION operating system Keep an EYE

what is user?

Asked In Operating System MAN (7 years ago)

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(#M40018990) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

What is the state of the processor,
when a process is waiting for some event to occur?

Asked In Operating System (7 years ago)

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(#M40153633) OPERATING SYSTEM QUESTION scheduling Keep an EYE

a computer memory is composed of 16k words of 8 bits

Asked In Operating System kowsalya (5 years ago)

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(#M40029483) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What are residence monitors?

A. Early operating systems were called residence monitors.

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(#M40029458) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is thrashing?

A. It is a phenomenon in virtual memory schemes when the processor spends most of its time swapping pages, rather than executing instructions. This is due to an inordinate number of page faults

Asked In Operating System MAN (7 years ago)

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