Operating System (OS)
Object code

is the output of compilers, but not assemblers
is ready to execute
None of these
must be rewritten before execution
must be "loaded" before execution

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

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