What is the result of this configuration?

Refer to the exhibit.

What is the result of this configuration?
A . Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authorization.
B . Router 1 and the TACACS+ server maintain one open connection between them only when network administrator is accessing the router with password ciscotest.
C . Router 1 and the TACACS+ server maintain one open connection between them.
D . Router 1 opens and closes a TCP connection to the TACACS+ server every time a user requires authentication.

View Answer

Answer: C

Explanation:

https://www.ccexpert.us/cisco-secure/configuring-tacacs-on-cisco-ios.html

single-connection (Optional) Used to specify a single connection. Rather than have the router open and close a TCP connection to the daemon each time it must communicate, the single-connection option maintains a single open connection between the router and the daemon. This is more efficient because it allows the daemon to handle a higher number of TACACS operations.