Some of the acronyms still don't actually MEAN a lot. TCP for example, I understand what each individual word means but what does the whole phrase mean? UDP? I don't even know what the individual letters stand for
The IP address specifies the source or destination of the packets being sent. The port number defines which service the packet is destined for - HTTP, SMTP, FTP, Telnet etc.
The packet will either be sent to a port using TCP (Transmission Control Protocol) or UDP (User Datagram Protocol). The former provides error correction and guaranteed delivery but with a reduced speed due to the overhead, while the latter is faster but without error correction. A rough analogy is ordinary snail mail (fire and forget) and recorded delivery (guaranteed delivery but more expensive).
SD