Operating System (OS)
A co-processor

Is quite common in modern computer
Is relatively easy to support in software
Causes all processor to function equally
Works with any application

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Operating System (OS)
Under virtual storage,

a single program is processed by two or more CPUs
None of these
interprogram interference may occur
only the active pages of a program are stored in primary storage
two or more programs are stored concurrently in primary storage

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Operating System (OS)
Multiprogramming systems:

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

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