What does TACACS provide in network management?

TACACS, which stands for Terminal Access Controller Access-Control System, is a protocol used for network access control. Its comprehensive functionality is crucial for network management because it provides three key services: authentication, authorization, and accounting, often referred to as AAA.

Authentication is the first step where TACACS verifies the identity of users trying to access the network. It ensures that only authorized individuals can log in to the system, adding a layer of security to the network.

Once authenticated, authorization comes into play. This service determines what level of access the user has within the network. It controls permissions, ensuring that users can only perform actions according to their profile or role, thus maintaining a secure and efficient environment.

Accounting, the final piece of the puzzle, involves tracking user activities and maintaining records of data for auditing and reporting purposes. This is essential for monitoring network usage and ensuring compliance with policies.

The combination of these three services through TACACS makes it an essential component for effective network management, as it addresses security and accountability comprehensively. Each function plays a significant role in maintaining the integrity and security of the network, which is why the answer correctly identifies that TACACS provides all three services together.