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

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

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Operating System (OS)
Under virtual storage,

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

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