The Cisco NAC Guest Server can authenticate the "sponsors" using which four methods? (Choose four

The Cisco NAC Guest Server can authenticate the “sponsors” using which four methods? (Choose four.)

A.
Authenticates the sponsor accounts directly on the Cisco NAC Guest Server

B.
Authenticates sponsors against an existing AD

C.
Authenticates sponsors against an existing LDAP server 11

D.
Authenticates sponsors against a TACACS+ server

E.
Authenticates sponsors against a RADIUS server

F.
Authenticates the sponsor accounts against the Cisco WCS