TCP/IP
Transmission Control Protocol and Internet Protocol are the core of internet protocol suite as the they work together in supporting web functions.
TCP is used in email, FTP, file sharing, media streaming and the Internet in general. Because of traffic load, network congestion and other network behavior, IP packets could not be delivered properly so TCP detects possible problems to achieve successful data transmission.
Meanwhile, IP is the one responsible in supervising exchanges in packets or pieces of data — the main communications protocol for relating network packets. It reads the destination and delivers the data packets to the proper address. IP is mainly tasked with addressing and routing, which is how end hosts are assigned IP addresses and subs grouped accordingly.