A network administrator uses the CLI to enter a command that requires several parameters. The switch responds with “% Incomplete command”. The administrator cannot remember the missing parameters. What can the administrator do to get the parameter information? append ?

     A.    to the last parameter
     B.    append a space and then ? to the last parameter 
     C.    use Ctrl-P to show a parameter list.
     D.    use the Tab key to show which options are available

ANS: B