Operating System (OS)
Under virtual storage,

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

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Operating System (OS)
Memory management is :

critical for even the simplest operating systems
not used in modern operating system
not used on multiprogramming systems
None of these
replaced with virtual memory on current systems

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