What is a commonality between DMVPN and FlexVPN technologies?

What is a commonality between DMVPN and FlexVPN technologies?
A . FlexVPN and DMVPN use IS-IS routing protocol to communicate with spokes
B . FlexVPN and DMVPN use the new key management protocol
C . FlexVPN and DMVPN use the same hashing algorithms
D . IOS routers run the same NHRP code for DMVPN and FlexVPN

View Answer

Answer: D

Explanation:

Reference: https://packetpushers.net/cisco-flexvpn-dmvpn-high-level-design/