Draw a directed graph that corresponds to the access matrix

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Reference no: EM131211932

For the DAC model discussed in Section 4.3, an alternative representation of the protection state is a directed graph. Each subject and each object in the protection state is represented by a node (a single node is used for an entity that is both subject and object). A directed line from a subject to an object indicates an access right, and the label on the link defines the access right.

a. Draw a directed graph that corresponds to the access matrix of Figure 12.13a.

b. Draw a directed graph that corresponds to the access matrix of Figure 15.4.

c. Is there a one-to-one correspondence between the directed graph representation and the access matrix representation? Explain.

Figure 12.13a

Reference no: EM131211932

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