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Operating Systems Questions and Answers

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Summary

UNIT I
1. What is an Operating system?
An operating system is a program that manages the computer hardware. It also provides a basis for application programs and act as an intermediary between a user of a computer and the computer hardware. It controls and coordinates the use of the hardware among the various application programs for the various users.
2. Why is the Operating System viewed as a resource allocator & control program?
A computer system has many resources – hardware & software that may be required to solve a problem, like CPU time, memory space, file-storage space, I/O devices & so on. The OS acts as a manager for these resources so it is viewed as a resource allocator.
The OS is viewed as a control program because it manages the execution of user programs to prevent errors & improper use of the computer.
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