Operating System (OS)
Trojan-Horse programs

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

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

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

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