What OSPF network types beside broadcast has the DR/BDR election process?
Ospf network types
There are two OSPF network types that use the DR/BDR concept. They are the BROADCAST and NBMA (nonbroadcast/multi-access) network types.
Note that if you are using the NMBA network type - you must manually specify neighbors with the OSPF neighbor command.
So the network types that do not use the DR/BDR are: