TCP/IP is an abbreviation for Transmission Control Protocol/Internet Protocol.
TCP is a lossless protocol, requiring a handshake to insure that data is not lost during transmission.
Internet Protocol (IP) uses addresses which are a series of four "octet" (byte) numbers in a dotted decimal notation. For example: 18.104.22.168
IP addresses are of three classes:
Application protocols such as HTTP, and FTP are based on and use TCP/IP.