(The two protocols in the TCP/IP transport layer are the Transmission Control Protocol (TCP) defined in RFC761 in January 1980 and the User Datagram Protocol (UDP) defined in RFC768 in August 1980. Both protocols support upper layer protocol communication. For example, TCP provides transport layer support for protocols such as HTTP and FTP; UDP provides transport layer support for Domain Name Service (DNS) and Trivial File Transfer Protocol (TFTP). The ability to understand the parts of the TCP and UDP headers and how they work is an important skill for network engineers to master. This document includes the following attachments:
Investigating the three-way handshake of the TCP connection setup process.pdf)
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