Cisco Certified Network Professional Practice Test 2025 – Your All-in-One Guide to Exam Success!

The available AAA authentication methods for configuring a login are well-defined within the Cisco framework, and the selection of RADIUS, TACACS+, local, and line encompasses the core methods used in network authentication.

RADIUS (Remote Authentication Dial-In User Service) and TACACS+ (Terminal Access Controller Access-Control System Plus) are protocol-based authentication methods that offer centralized management of user credentials and access policies. These protocols are particularly useful for managing authentication for large numbers of users and devices across various network environments. They allow administrators to enforce security policies systematically and can be configured to work with external databases.

The local method refers to storing authentication credentials directly on the device itself. This is particularly useful for scenarios where centralized access servers are unavailable. With the local method, each device maintains its own user database, making it a reliable fallback option.

The line method specifies access control for various lines of access to the device, such as console and virtual terminal lines. This method allows administrators to manage how users authenticate when connecting to the device physically or remotely.

By combining these four methods - RADIUS, TACACS+, local, and line - the configuration provides flexibility and security, allowing for diverse authentication needs based on the environment and requirements of the network. This comprehensive approach enables administrators to