Correct answer A

show authentication sessions mac H.H.H details is a valid command

Selected Answer: A No need to overthink it, log in to a switch and check the command!

A, the [details] keyword shows multiline results. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-xe-3se-3850-cr-book/sec-s1-xe-3se-3850-cr-book_chapter_01.html#wp3404908137

Selected Answer: A Tested in my lab. A. This is the right answer. The output looks the same on my 3650. B. show authentication registrations = Shows clients registered with Session Manager C. show authentication interface ? = Invalid syntax ? D. show authentication sessions method = Incomplete Command

Selected Answer: A A is correct; C is not. C needs the details keyword to display the output that is shown

C is the Correct answer show authentication interface gigabitethernet2/0/36 because the other commands are wrong or they give different and incomplete output

I think D is the correct answer

C is the correct answer. show authentication session : Gives output of all authenticated devices. Not the output shown in question. show authentication registration : Shows auth methods registered with auth manager. The output shown is from show authentication interface command. Reference : https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-xe-3se-3850-cr-book/sec-s1-xe-3se-3850-cr-book_chapter_01.html

A is the correct answer (it is a valid command) C would have also been correct, but it is missing the (session) keyword, so it is the wrong command.

A is the correct answer. Below is the command with all of its optional syntax. You can see that mac address is optional syntax show authentication sessions [ handle handle-number | interface type number | mac mac-address | method method-name interface type number | session-id session-id ] https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-xe-3se-3850-cr-book/sec-s1-xe-3se-3850-cr-book_chapter_01.html#wp3404908137