Operating System (OS)
Operating system is

All of these
A collection of input-output devices
A collection of hardware components
A collection of software routines
None of these

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Operating System (OS)
Multiprogramming

None of these
is a method of allocating processor time.
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 memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.

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