Operating System (OS)
All the time a computer is switched on, its operating system software has to stay in

primary storage
floppy disk
disk drive
main storage
None of these

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Operating System (OS)
Multiprogramming

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.
is a method of allocating processor time.
consists of those addresses that may be generated by a processor during execution of a computation.
None of these
allows multiple programs to reside in separate areas of core at the time.

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Operating System (OS)
Virtual Memory

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.
allows multiple programs to reside in separate areas of core at the time.
None of these
is a method of allocating processor time.

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