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

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

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Operating System (OS)
Process is

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

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