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A two dimensional grouping of individual subjects into groups or roles and granting access to groups to object

A two dimensional grouping of individual subjects into groups or roles and granting access to groups to objects is an example of which of the following types of models?

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A.
Multilevel lattice

B.
State machine

C.
Non-interference

D.
Matrix-based

Explanation:
D: While lattice-based models tend to treat similar subjects and objects with similar restrictions, matrix-based models focus on one-to-one relationships between subjects and objects. The best known example is the organization of subjects and objects into an access control matrix. An access control matrix is a two-dimensional table that allows for individual subjects and objects to be related to each other. A state machine model, describes the behavior of a system as it moves between one state and another, from one moment to another. A noninterference model maintains activities at diff erent security levels to separate these levels from each other. In this way, it minimizes leakages that may happen through covert channels, because there is complete separation between security levels. Page 684.


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