Which VPN technology uses the Group Domain of Interpretation as the keying protocol and IPsec
for encryption that is often deployed over a private MPLS core network?

A.
DMVPN

B.
GET VPN

C.
SSL VPN

D.
L2TPv3

Explanation:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/deployment_
guide_c07_554713.html