Which of the following is correct about a preemptive operating system?
2023
Which of the following is correct about a preemptive operating system?
- A.
Processes voluntarily release the CPU
- B.
Only one process runs in the entire system
- C.
Once a process starts, it cannot be interrupted
- D.
The OS can forcibly take the CPU from a running process
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Correct answer: D
The correct answer is Option D: The OS can forcibly take the CPU from a running process. In a preemptive operating system, the kernel can interrupt a currently running process and forcibly reclaim the CPU to allocate it to a higher-priority process or due to time-slice expiration, ensuring balanced multitasking.