Q. 13 A CPU has two modes-privileged and non-privileged. In order to change the mode from privileged to non-privileged
(A) a hardware interrupt is needed
(B) a software interrupt is needed
(C) a privileged instruction (which does not generate an interrupt) is needed
(D) a non-privileged instruction (which does not generate an interrupt is needed
Answer: (B)
Explanation:
