Which three statements are true about TACACS+?()
A.It is a Cisco proprietary protocol.
B.It runs on TCP port 59. .
C.Authentication and authorization are done at different stages.
D.TACACS+ encrypts the entire body of the packet, but leaves a standard TACACS+ header.
E.It is an industry standard protocol.
F.TACACS+ encrypts both the entire body of the packet and the TACACS+ header.