The five TCP/IP protocols are the Transmission Control Protocol (TCP), the Internet Protocol (IP), the Hypertext Transfer Protocol (HTTP), the Simple Mail Transfer Protocol (SMTP), and the File Transfer Protocol (FTP).
The four TCP/IP protocols are the Transmission Control Protocol (TCP), the Internet Protocol (IP), the User Datagram Protocol (UDP), and the Internet Control Message Protocol (ICMP).
There are numerous TCP/IP protocols, but the main suite comprises around a dozen key protocols including TCP, IP, UDP, and others.
The TCP/IP model is a 4-layer model consisting of the Application, Transport, Internet, and Network Access layers.
The three main protocols in the TCP/IP protocol suite are the Transmission Control Protocol (TCP), the Internet Protocol (IP), and the User Datagram Protocol (UDP).