Question: (10%) In a ring-based system, procedure p is executing and needs to access data segment d. Segment d's access bracket is (5,6). In which ring(s)

(10%) In a ring-based system, procedure p is executing and needs to access data segment d. Segment d's access bracket is (5,6). In which ring(s) must p execute for the following to happen?

(a) p can read and write to d.

(b) p can read d but not write to d.

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