What is the default timeout interval during which a router waits for responses from a TACACS server before
declaring a timeout failure?

A.
5 seconds

B.
10 seconds

C.
15 seconds

D.
20 seconds

Explanation:
BD
To set the interval for which the server waits for a server host to reply, use the tacacs-server timeout
command in global configuration mode. To restore the default, use the no form of this command.
If the command is not configured, the timeout interval is 5.
Source: http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/command/reference/srftacs.html