Phase I and Phase II DMVPN differ in terms of which of these characteristics?

A.
Utilization of spoke-to-spoke dynamic tunnels

B.
Utilization of multipoint GRE tunnels at the hub site

C.
Utilization of hub-to-spoke dynamic tunnels

D.
Support for multicast

Explanation:
DMVPN Phases
Phase 1: Hub and spoke functionality
Phase 2: Spoke-to-spoke functionality
Phase 3: Architecture and scaling
DMVPN Phase 1 Benefits Simplified and Smaller Comfig’s for Hub and Spoke Zero touch
provisioning for adding spokes to the VPN Easily supports dynamically addressed CPEs
DMVPN Phase 2 Benefits Future Functionality On-demand spoke-to-spoke tunnels avoids dual
encrypts/ decrypts smaller spoke CPE can participate in the virtual full mesh