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Which of the following instructions should be privileged?
written 2.5 years ago by | modified 2.5 years ago by |
Which of the following instructions should be privileged?
a. Set the value of the timer.
b. Read the clock.
c. Clear memory.
d. Issue a trap instruction.
e. Turn off interrupts.
f. Modify entries in the device-status table.
g. Switch from user to kernel mode.
h. Access I/O device.
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