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

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

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Operating System (OS)
Round-robin scheduling

allows processor-bound tasks more time in the processor
None of these
is quite complex to implement
allows interactive tasks quicker access to the processor
gives each task the same chance at the processor

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