ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 102

Which function is performed by a TACACS+ server?

Answer options

• A. It hosts an access list that permits or denies IP traffic to the control plane of a device.
• B. It provides external AAA verification.
• C. It filters usernames and passwords for Telnet and SSH.
• D. It serves as a database for line passwords. B

Correct answer:

Explanation

The correct answer is B because TACACS+ is specifically designed to provide external AAA (Authentication, Authorization, and Accounting) services. Option A refers to access control lists, which are not the primary function of TACACS+. Options C and D pertain to user credentials and password storage, which are not the main responsibilities of a TACACS+ server.