Refer to the exhibit. Router R1 is configured as shown. An administrative user attempts to use Telnet from router R2 to R1 using the interface IP address 10.10.10.1. However, Telnet access is denied. Which conclusion can be drawn from this scenario?
- The vty lines must be configured with the login authentication default command.
- The password was mistyped.
- The administrative user should use the username Admin .
- The aaa local authentication attempts max-fail command must be set to 2 or higher.
Explanation: The AAA authentication is defined with the list default with two methods. The first method is to use the local database and the second method is to use the enable password. The local keyword indicates that the username and password are not case-sensitive, so the username can be typed as “admin”. The problem is that the password is “Str0ng5rPa55w0rd” and the user typed “Str0ngPa55w0rd”.