Transmission Control Protocol / Internet Protocol (TCP/IP) refers to the suite of Internet standards that are at the core of the Internet. These protocols define the basis for data communication across the Internet.
From The ISP ColumnA monthly opinion column by Geoff Huston
TCP - How it works
Blurring the Lines
From the ISOC “Articles of Interest” Series
One Byte at a Time: Bootstrapping with BOOTP and DHCP