Which two statements about DMVPN are true?

Which two statements about DMVPN are true?
A . It is a tunnel-less VPN technology
B . It supports multicast and QoS within tunnels
C . It provides a routetable interface for terminating IPsec tunnels
D . It uses automatic IPsec triggering to build IPsec tunnels
E . It allows both the hub and the spokes to use dynamic IP address
F . It is an open standard

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Answer: D E