Operating System (OS)
Under virtual storage,

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

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

suspending some of the processes when the CPU load is high
None of these
assigning ready process to the CPU
bring processes from the disk to the main memory
swapping a process to the disk

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