Operating System INTERVIEW QUESTION & ANSWERS
1. |
Define Operating system? |
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An operating system is a program that controls the execution of application programs and acts as an interface between the user of a computer and the computer hardware. |
2. |
What are the functions of operating system? |
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Operating system performs three functions:-
Convenience : An OS makes a computer more convenient to use.
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Efficiency: An OS allows the computer system resources to be used in an efficient manner.
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Ability to evolve: An OS should be constructed in such a way as to permit the effective development, testing and introduction of new system functions without at the same time interfaring with service.
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3. |
Define Process? |
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A Process ( also known as Task) is an instance of a program in execution. While a program is just a passive entity, a process is an active entity performing the intended functions of its related program. It is the smallest unit of work that is independently schedulable.
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4. |
What are the types of schedulers? |
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Schedulers are of three types.-
Long term scheduler
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Short term scheduler
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Medium term scheduler
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