Which benefit of AAA is best described by the ability to track outdated user credentials across multiple network devices?
- redundancy
- scalability
- standardization
- flexibility
Explanation: Scalability is the benefit of AAA that specifically addresses the challenges of managing user credentials across a growing network. According to the sources, while a local database might work for a small number of users on a single device, managing many users across multiple network devices becomes highly impractical, error-prone, and an administrative burden as the network expands.
Without a centralized AAA model, outdated credentials or the lack of individual accounts often leads to multiple administrators sharing a single username, which results in the loss of the ability to track activities back to a specific individual. Centralizing these services on a TACACS+ or RADIUS server provides the necessary manageability and control to ensure that credentials remain current and user actions remain accountable across the entire infrastructure.
Related exam: Modules 14 – 16: Checkpoint Exam: Network Security Answers (CCNP ENCOR v9)
