Refer to the exhibit.
Which statement about this output is true?
A.
The user logged into the router with the incorrect username and password.
B.
The login failed because there was no default enable password.
C.
The login failed because the password entered was incorrect.
D.
The user logged in and was given privilege level 15.
Explanation:
http://www.cisco.com/en/US/docs/ios/12_2/debug/command/reference/dbfaaa.html
debug aaa authentication
To display information on AAA/Terminal Access Controller Access Control System Plus (TACACS+)
authentication, use the debug aaa authentication privileged EXEC command. To disable debugging
command, use the no form of the command.
debug aaa authentication
no debug aaa authentication
The following is sample output from the debug aaa authentication command. A single EXEC login
that uses the “default” method list and the first method, TACACS+, is displayed. The TACACS+ server
sends a GETUSER request to prompt for the username and then a GETPASS request to prompt for
the password, and finally a PASS response to indicate a successful login. The number 50996740 is the
session ID, which is unique for each authentication. Use this ID number to distinguish between
different authentications if several are occurring concurrently.
Router# debug aaa authentication
6:50:12: AAA/AUTHEN: create_user user=” ruser=” port=’tty19′ rem_addr=’172.31.60.15′
authen_type=1 service=1 priv=1
6:50:12: AAA/AUTHEN/START (0): port=’tty19′ list=” action=LOGIN service=LOGIN
6:50:12: AAA/AUTHEN/START (0): using “default” list
6:50:12: AAA/AUTHEN/START (50996740): Method=TACACS+
6:50:12: TAC+ (50996740): received authen response status = GETUSER
6:50:12: AAA/AUTHEN (50996740): status = GETUSER
6:50:15: AAA/AUTHEN/CONT (50996740): continue_login
6:50:15: AAA/AUTHEN (50996740): status = GETUSER
6:50:15: AAA/AUTHEN (50996740): Method=TACACS+
6:50:15: TAC+: send AUTHEN/CONT packet
6:50:15: TAC+ (50996740): received authen response status = GETPASS
6:50:15: AAA/AUTHEN (50996740): status = GETPASS
6:50:20: AAA/AUTHEN/CONT (50996740): continue_login
6:50:20: AAA/AUTHEN (50996740): status = GETPASS
6:50:20: AAA/AUTHEN (50996740): Method=TACACS+
6:50:20: TAC+: send AUTHEN/CONT packet
6:50:20: TAC+ (50996740): received authen response status = PASS
6:50:20: AAA/AUTHEN (50996740): status = PASS