At which two networks points is route summarization supported? (Choose two)

EIGRP does not use the concept of AS boundaries for summarization in the same way BGP does - summarization is configured per-interface, not at AS boundary points.

EIGRP supports manual summarization applied per-interface using the 'ip summary-address eigrp' command, allowing summarization at any point in the topology regardless of AS boundaries.

OSPF virtual links are used to extend the backbone area through a non-backbone area and do not support or act as summarization boundaries.

EIGRP does not have areas like OSPF, so 'EIGRP area boundaries' is not a valid concept in EIGRP routing.

OSPF summarization is performed at Area Border Routers (ABRs) using the 'area range' command and at AS Boundary Routers (ASBRs) using 'summary-address', making area boundaries the correct summarization points.

EIGRP stub routing reduces query propagation but is not a route summarization boundary - stub routers advertise only their directly connected and summary routes.