Review problem on ring-structured operating system

Reference no: EM131823494

Question: The VMS scheme discussed in the preceding problem is often referred to as a ring protection structure, as illustrated in Figure. Indeed, the simple kernel/user scheme is a two-ring structure.

A disadvantage of a ring-structured access control system is that it violates the principle of least privilege. For example if we wish to have an object accessible in ring X but not ring Y, this requires that X 6 Y. Under this arrangement all objects accessible in ring X are also accessible in ring Y.

a. Explain in more detail what the problem is and why least privilege is violated.

b. Suggest a way that a ring-structured operating system can deal with this problem.

Reference no: EM131823494

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