Which statement about OSPF hub-and-spoke topology is true?

While DR election is a known challenge in NBMA hub-and-spoke OSPF, the standard remedy is the point-to-multipoint network type rather than point-to-point, as point-to-point requires individual subnets per spoke link and does not scale well.

DR/BDR elections do not occur on all OSPF network types - point-to-point and point-to-multipoint network types specifically skip the DR/BDR election process, making this absolute statement false.

In DMVPN Phase 2 and Phase 3 hub-and-spoke deployments, NHRP triggers dynamic spoke-to-spoke tunnels so that traffic between spokes bypasses the hub router entirely, reducing latency and hub CPU load without requiring every packet to traverse the hub.

OSPF area assignment rules and backbone connectivity requirements still apply regardless of the underlying network type, so spoke routers cannot freely belong to different areas without satisfying proper area design and ABR constraints.