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

floppy disk
disk drive
primary storage
main storage
None of these

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Operating System (OS)
Virtual Memory

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

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