Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 346

How does TACACS+ facilitate secure connections for user access to network routers?

Answer options

• A. The user provides a password over a secure connection to the TACACS+ server for authorization.
• B. The network access server communicates securely with a TACACS+ daemon to authenticate the user.
• C. The network access server communicates securely with the router via the TACACS+ protocol to authorize Telnet access by the user to specific parts of a router.
• D. The user’s end device uses CHAP to securely query the network access server to authenticate the user via the TACACS+ protocol.

Correct answer: B

Explanation

The correct answer is B because the TACACS+ protocol allows for secure communication between the network access server and the TACACS+ daemon for user authentication. Option A is incorrect as it focuses on authorization rather than the authentication process. Option C misrepresents the role of the TACACS+ protocol in the context of Telnet access authorization, while D incorrectly suggests that CHAP is used for authentication instead of TACACS+.