Final answer:
Timesharing is the concept that shares CPU time among multiple processes, providing the illusion that each user has their own dedicated machine.
Step-by-step explanation:
The concept that shares CPU time among multiple processes to create the illusion that each user has a dedicated machine is known as D. timesharing. Timesharing is a technique used in multi-user operating systems where each user's tasks or processes receive a small slice of CPU time in rotation, making it seem as though the CPU is exclusively running their program. It benefits from CPU scheduling algorithms which determine the order in which processes run, but the fundamental goal of timesharing is to provide a responsive computing environment for multiple users simultaneously.For example, in a timesharing system, if there are five users running different processes, each user will be allocated a small fraction of CPU time in a cyclic pattern so that all processes make progress concurrently.
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