IEEE Standard 802.3a. Variant of Ethernet that uses Thinnet coaxial cables.

10 stand for transmission speed in Mega bits per second. 10Mbps.

Base stands for Baseband signal technology. Baseband means single type/frequency of signal on wire.

Cable type:  Coaxial cable. 50-ohm resistance.  Also called Thinnet or Cheapnet. 10BASE2 uses RG(Radio Guide)-58A/U (U means General Utility Use).

Cable width: 0.5cms approx

Connectors used: BNC (Bayonet Neill–Concelman) Connector. Each end of cable has BNC connector with built in 50ohm resistor.

Lenth: Maximum supported length is 185 metres (607 ft). Approximately 200meters. The numeral 2 in 10Base2 is taken from this (Length 200meters approx)

Topology type: Bus Topology.

Year of Development :  1985

Oliver Heaviside invented coaxial cable in 1880