AAA Operations Comparison: User Identification, User Services, and Access Control

B.

AAA (Authentication, Authorization, and Accounting) is a framework that provides a standardized way of controlling access to network resources. The three components of AAA, Authentication, Authorization, and Accounting, work together to provide a comprehensive solution for network access control.

Authentication is the process of verifying the identity of a user or device trying to access a network resource. This is typically achieved through the use of a username and password, digital certificates, or biometric authentication. Authentication ensures that only authorized users or devices are granted access to the network.

Authorization is the process of determining what actions a user or device is allowed to perform once they have been authenticated. Authorization policies are defined by network administrators and are typically based on the user's role, group membership, or other attributes. Authorization ensures that users or devices are granted only the level of access necessary to perform their assigned tasks.

Accounting is the process of tracking the activities of authenticated users or devices on the network. This includes tracking the resources they access, the duration of their sessions, and the amount of data they transfer. Accounting provides administrators with a detailed audit trail of network activity, which can be used for troubleshooting, compliance, or billing purposes.

Therefore, the correct answer to the question is option B. Authentication identifies users, and accounting tracks user services. Authorization determines what actions the authenticated user or device is allowed to perform.

In summary, Authentication ensures that only authorized users or devices are granted access to the network, Authorization determines what actions the authenticated user or device is allowed to perform, and Accounting tracks the activities of authenticated users or devices on the network.