Operating System (OS)
Multiprogramming systems:

are used only on large mainframe computers
execute more jobs in the same time period
None of these
execute each job faster
are easier to develop than single programming system

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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.
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.
None of these

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