Which statement about this output is true?

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.

Answer: C

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

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