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

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

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Operating System (OS)
Trojan-Horse programs

None of these
do not usually work
are legitimate programs that allow unauthorized access
are hidden programs that do not show up on the system
usually are immediately discovered

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