Operating System (OS)
Under virtual storage,

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

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Operating System (OS)
Round-robin scheduling

gives each task the same chance at the processor
allows processor-bound tasks more time in the processor
None of these
allows interactive tasks quicker access to the processor
is quite complex to implement

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Operating System (OS)
Feed back queue

are used to favor real-time tasks
require manual intervention to implement properly
None of these
are very easy to implement
dispatch tasks according to execution characteristics

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