I imagine it means more than one thing but the first thing I thought of is a Network Interface Card. This is very general (Wireless or wired). There is quite a bit of information on a website I came accross recently at http://www.introtobroadband.co.uk on broadband and ADSL etc. (Things you would likely need a NIC for).
No, the NIC will automatically install its own protocols and use them if needed
Nic Olymipiks is the largest mountain on Mars
Egypt is a NIC!!!
Nic Main is 6'.
Nic Wegener is 7'.
Nic Baisley is 6'.
Nic Sarnoff is 6'.
Nic Nakis goes by Ras Nicholas, Camo Nic, and The Mad Greek.
Nic. Nilsen was born in 1944.
Nic Jones was born in 1947.
Nic Leblanc was born in 1941.
Nic Potter was born in 1951.