How do AAA functions relate to user identification, service tracking, and access control?

AAA stands for Authentication, Authorization, and Accounting. Authentication verifies a user's identity, confirming they are who they claim to be, typically through a username and password. Accounting tracks user activity, including what services they accessed, how long, and how much data they consumed. Authorization determines what resources a verified user is permitted to access. The incorrect options misassign these roles. For example, "Authorization provides access control, and authentication tracks user services" is wrong because authentication identifies, and accounting tracks. Similarly, "Accounting tracks user services, and authentication provides access control" incorrectly assigns access control to authentication. "Authorization identifies users, and authentication provides access control" is also incorrect as authentication identifies, and authorization controls access.