Refer to the exhibit. What could be concluded aboutthe TACACS+ failure based on the exhibited commandoutput from debug tacacsand debug aaa authentication?
- The TACACS+ server is not operational.
- The TACACS+ server IP address has been incorrectly configured on the router.
- The TACACS+ server key of the router does not matchthat of the TACACS+ server.
- The username and password that were supplied by theuser were rejected by the TACACS+ server.