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Protection mechanisms for a computer security system may include protection rings which organize code and applications under the operating systems control. Using the four-ring model of protection ring which level has the highest privilege level?
Ring 0
Ring 1
Ring 4
Ring 3
The correct answer is Ring 0. Ring 0 has the highest privilege level, Ring 3 is the lowest, and ring 4 does not exist in a four ring model.
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