What defines Rule-Based Access Control?

Rule-Based Access Control (RBAC) is primarily characterized by the establishment of specific criteria and guidelines that dictate access permissions within an information system. This model relies heavily on predefined rules set by administrators, which outline who has permission to access what resources based on various conditions. For instance, these rules can include criteria like time of access, location, and user attributes, among other factors.

In this framework, permissions can be very granular and are tailored to ensure that policies regarding security and access are thoroughly enforced. This promotes a structured and systematic approach to access control, allowing organizations to maintain security while also facilitating resource management efficiently.

The other options focus on different aspects of access control; for example, user roles are part of role-based access control, while job descriptions imply a more general form of access management. Decentralized control based on user feedback does not align with the structured and rule-based approach of RBAC, which is centralized and defined by administrative guidelines. Thus, option B accurately represents the essence of Rule-Based Access Control.