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

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

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Operating System (OS)
Capacity planning

is independent of the operating system
is not needed in small installations
does not depend on the monitoring tools available
requires detailed system performance information
None of these

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