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GATE | GATE CS 2008 | Question 34

Which of the following must be true for the RFE (Return from Exception) instruction on a general purpose processor?
I.   It must be a trap instruction
II.  It must be a privileged instruction
III. An exception cannot be allowed to occur during 
     execution of an RFE instruction 

(A)

I only

(B)

II only

(C)

I and II only

(D)

I, II and III only

Answer

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