Operating System (OS)
Non-modifiable procedures are called

None of these
topdown procedures
serially usable procedures
reentrant procedures
concurrent procedures

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Operating System (OS)
Virtual Memory

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
allows multiple programs to reside in separate areas of core at the time.
is a method of allocating processor time.

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