Operating System (OS)
Under virtual storage,

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

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Operating System (OS)
Feed back queue

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

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