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

primary storage
disk drive
None of these
floppy disk
main storage

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Operating System (OS)
Virtual Memory

None of these
allows multiple programs to reside in separate areas of core at the time.
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.
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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