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Frequently Asked Operating System interview questions and answers for freshers Page 9

(#M40029453) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is semaphore?

A. Semaphore is a variable, whose status reports common resource, Semaphore is of two types one is Binary semaphore and other is Counting semaphore

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(#M40029452) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is starvation and aging?

A. Starvation is Resource management problem where a process does not get the resources it needs for a long time because the resources are being allocated to other processes. Aging is a technique to avoid starvation in a scheduling system

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(#M40029451) OPERATING SYSTEM QUESTION operating system Keep an EYE

What are the states of a process?
1. New
2. Running
3. Waiting
4. Ready
5. Terminated

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(#M40029450) OPERATING SYSTEM QUESTION operating system Keep an EYE

What is a process?
A program in execution is called a process.
Processes are of two types:
1. Operating system processes
2. User processes

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(#M40029446) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is kernel?

A. Kernel is the core and essential part of computer operating system that provides basic services for all parts of OS.

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(#M40029445) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What are the basic functions of an operating system?

A. Operating system controls and coordinates the use of the hardware among the various applications programs for various uses. Operating system acts as resource allocator and manager. Also operating system is control program which controls the user programs to prevent errors and improper use of the computer. It is especially concerned with the operation and control of I/O devices.

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(#M40029444) OPERATING SYSTEM QUESTION operating system Keep an EYE

What are the different operating systems?
1. Batched operating systems
2. Multi-programmed operating systems
3. timesharing operating systems
4. Distributed operating systems
5. Real-time operating systems

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(#M40029443) OPERATING SYSTEM QUESTION operating system Keep an EYE

Q. What is an operating system?

A. An operating system is a program that acts as an intermediary between the user and the computer hardware. The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner.

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(#M40019004) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

Explain about paged segmentation and
segment paging

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(#M40019003) OPERATING SYSTEM QUESTION Operating System Questions Keep an EYE

Demand paging, page faults,
replacement algorithms, thrashing, etc.

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