Question

How can fence and relocation be used together?

(a) To each program address, the contents of fence register are added

(b) To contents of fence register is subtracted from actual address of program

(c) To each program address, the contents of fence register are not added

(d) None of the mentioned

I got this question by my school principal while I was bunking the class.

I need to ask this question from Protection in division Protection of Operating System

Answer 1

Right answer is (a) To each program address, the contents of fence register are added

Easiest explanation - This both relocates the address and guarantees that no one can access a location lower than a fence address.