Which two statements about NHRP in a DMVPN environment are true? (Choose two)
A. It requires each endpoint to have a unique network ID
B. It routes traffic through the tunnel
C. It can identify PIM-SM RPs over a tunnel
D. It can authenticate VPN endpoints
E. It provides address resolution to route traffic
DE
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nhrp/configuration/xe-3s/nhrp-xe-3s-book/config-nhrp.html
NHRP is an ARP-like protocol that alleviates these NBMA network problems. With NHRP, systems attached to an NBMA network dynamically learn the NBMA address of the other systems that are part of that network, allowing these systems to directly communicate without requiring traffic to use an intermediate hop.
Specifying the NHRP Authentication String
Perform this task to specify the authentication string for NHRP on an interface.