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)
A linker

creates a load module
is not needed with a good compiler
None of these
must be run after the loader
is not necessary with variable partitions

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