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  3. 3 which of the following instructions should be allowed only...

Question: 3 which of the following instructions should be allowed only...

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3. Which of the following instructions should be allowed only in kernel mode? (Kernel mode is also know as superuser, supervisor, or executive mode.) 1. disable all interrupts 2. read the time-of-day clock 3. set the time-of-day clock 4. change the memory map 4. A computer has a pipeline with four stages. Each stage takes the same time to do the work, namely, 1 nsec. How many instructions per second san this machine execute?
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