Which two technologies should research groups use for secure VPN access while traveling?

Which two technologies should research groups use for secure VPN access while traveling?
(Click the Exhibit button on the toolbar to see the case study.)
Each correct answer represents a complete solution. Choose two.

A.
SSL

B.
Kerberos authentication

C.
PPTP

D.
Smart cards

E.
Encrypting File System (EFS)

Explanation: