Which two protocols are required for DMVPN?

ccnp-dump
ccnp-route-dump
ccnp-route

#1

Which two protocols are required for DMVPN? (Choose two)
A. IPsec
B. PPTP
C. mGRE
D. NHRP
E. Open VPN

Correct Answer: CD

Explanation:
The DMVPN feature allows users to better scale large and small IP Security (IPsec) Virtual Private Networks
(VPNs) by combining generic routing encapsulation (GRE) tunnels, IPsec encryption, and Next Hop Resolution Protocol (NHRP).