Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office? (Choose two.)

Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office? (Choose two.)
A . DMVPN
B . MPLS VPN
C . Virtual Tunnel Interface (VTI)
D . SSL VPN
E . PPPoE

Answer: AC

Explanation:

IP security (IPsec) virtual tunnel interfaces (VTIs) provide a routable interface type for terminating IPsec tunnels and an easy way to define protection between sites to form an overlay network. IPsec VTIs simplify configuration of IPsec for protection of remote links, support multicast, and simplify network management and load balancing.