Which form of access control enables data owners to extend access rights to other logons?
a. MAC
b. DAC
c. Role-based (RBAC)
d. Rule-based (RBAC)
Answer: B
Discretionary access control (DAC) systems enable data owners to extend access rights to other logons. Mandatory access control (MAC) systems require assignment of labels to extend access, making answer A incorrect. Answers C and D are incorrect because both RBAC access control forms rely on conditional assignment of access rules either inherited (role-based) or by environmental factors such as time of day or secured terminal location (rule-based).
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Access Control and Identity Management
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