What is the main characteristic of Limited RBAC?

Limited Role-Based Access Control (RBAC) is defined by its focus on specific applications rather than an organization's entire role structure. The main characteristic of Limited RBAC is that users are mapped to roles within a single application. This means that access rights and permissions are assigned based on the specific roles users have for that application, creating a tailored approach to access management suited to the particular needs of that application.

This is distinct from broader RBAC systems where roles may span across the organization (which would align with organization-wide roles) or where users might have multiple roles that apply to different resources within the organization. Additionally, options involving external factors do not accurately reflect the core principle of Limited RBAC, which is primarily concerned with the application context and the roles defined within that scope. Thus, the correct answer emphasizes the concentrated nature of access control applied at the application level, illustrating how Limited RBAC effectively manages permissions while being context-specific.