Which VPN technology supports dynamic creation of spoke-to-spoke VPN tunnels to provide a scalable design?

A.
IPsec

B.
GRE over IPsec

C.
DMVPN

D.
GRE

Explanation:
A dynamic multipoint virtual private network (DMVPN) is a secure network that exchanges data between sites without needing to pass traffic through an
organization’s headquarter virtual private network (VPN) server or router.

Direct spoke-to-spoke deployments provide a number of advantages when compared to traditional VPN deployments:
– Traffic between remote sites does not need to traverse the hub (headquarter VPN router).
– A DMVPN deployment eliminates additional bandwidth requirements at the hub.
– DMVPNs eliminate additional network delays.
– DMVPNs conserve WAN bandwidth.
– They lower costs for VPN circuits.
– They increase resiliency and redundancy.