NetBIOS generally refers to a programming API. In its early days though, it was a networking protocol. The protocol's API became a de-facto standard.
It has since been adapted to work over various other protocols such as IPX/SPX[?] and TCP/IP. The original version of the NetBIOS protocol has evolved into the NetBEUI[?] protocol.
... the census of 2000, there are 19,701 people, 6,700 households, and 5,011 families residing in the town. The population density is 1,549.2/km² (4,010.1/mi²). ...