Q1.13

MCQ1 mark, −0.25

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

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