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

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

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Operating System (OS)
Virtual Memory

None of these
is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
allows multiple programs to reside in separate areas of core at the time.
consists of those addresses that may be generated by a processor during execution of a computation.
is a method of allocating processor time.

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