Multiple choice

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

  1. I only

  2. II only

  3. I and II only

  4. I, II and III only

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation