A.RIPng B.OSPFv3 C.IS-IS for IPv6 D.static
A.hello packets B.SAP messages sent by other routers C.LSAs from other routers D.beacons received on point-to-point links E.routing tables received from other link-state routers F.TTL packets from designated routers
A.Each OSPF area requires a loopback interface to be configured. B.Areas may be assigned any number from 0 to 65535. C.Area 0 is called the backbone area. D.Hierarchical OSPF networks do not require multiple areas. E.Multiple OSPF areas must connect to area 0. F.Single area OSPF networks must be configured in area 1.