10base2
(Thin Coax)—In the past, networks were often configured using thin
coax (or 10base2) using RG-58 coaxial cables (at 50 Ohms) with BNC
connectors. RG-58 coaxial cable itself (not the connectors) is identical
in appearance to the RG-59 coaxial cable used for home television (at
75 Ohms).