多项选择题
A. You can see the contents of the log file by entering the show log <filename> command.
B. Trace options will send information to your screen automatically.
C. Trace options are limited to one protocol at a time.
D. The file name and a set of flags may be specified when enabling traceoptions.
单项选择题 Which login class permission will allow a user to use the telnet utility?（）
多项选择题 Which two login-class permissions could permit a user to view the system hierarchy of the active configuration?（）
单项选择题 The authentication order configuration on your M120 includes the settings tacplus and radius (in that order), but does not include the password parameter. You attempt to log in to the device, but the network containing the authentication servers is currently down. Which statement is true about your login attempt?（）