Explain the main purpose of an operating system? what is demand paging?
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It help to mange our program
It help to maintain system security
It help to maintain system security
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Explanation:
System call provides the services of theoperating system to the user programs via Application Program Interface(API). It provides an interface between a process and operating system to allow user-level processes to request services of the operating system. System callsare the only entry points into the kernelsystem.
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