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Answer the question in a few sentence: The CPU does fetch-decode-execute in a forever loop. Suppose that the CPU is executing a user's program. In

Answer the question in a few sentence:

The CPU does fetch-decode-execute in a forever loop. Suppose that the CPU is executing a user's program. In a multi-tasking OS, If the program is buggy or malicious, how is it that the program doesn't take hold of the CPU forever, preventing operating system code from running?

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