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Types of rings in CPU

Name the different kinds of rings presented in CPU?

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There are 4 different types of rings which are presented in CPU that are:

a.    Ring 0: It is known as kernel mode which is consist of the full access to the resources and the set of system. In this type of mode the Windows kernel runs also it takes all the services and manage them according to the priority.

b.    Rings 1 and 2: These are also known as customizable rings which consist of levels having access to the system. These are the rings where virtual machine runs as well as it make easy for users to access.

c.    Ring 3: This type of ring is known as user mode, having restricted access to the resources utilized in the CPU.

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