Operating System (OS)
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?

Windowing
Partitioning
Paging
Multitasking
None of these

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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
Performing housekeeping task like file compression and disk defragmentation
Managing hardware on the computer
Provides an interface for user to interact with computer

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