Your network contains an Active Directory domain named contoso.com. All client computers run either
Windows 7 or Windows 8.
Some users work from customer locations, hotels, and remote sites. The remote sites often have firewalls that
limit connectivity to the Internet.
You need to recommend a VPN solution for the users.
Which protocol should you include in the recommendation?

A.
L2TP/IPSec

B.
PPTP

C.
IKEV2

D.
SSTP