Operating System (OS)
All of the following are task performed by the operating system except

Performing housekeeping task like file compression and disk defragmentation
Managing hardware on the computer
Provides an interface for user to interact with computer
Controlling the access that application program has to the CPU

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Operating System (OS)
Process is

a job in secondary memory
a program in execution
None of these
program in High level language kept on disk
contents of main memory

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