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Main protocol used in Internet TCP/IP. It is commonly known as TCP/IP because thefoundational protocols in the suite are the Transmission Control Protocol (TCP)and the Internet Protocol (IP). The Internet protocol suite is theconceptual model and set of communications protocols used on the Internet andsimilar computer networks. It is commonly known as TCP/IP because thefoundational protocols in the suite are the Transmission Control Protocol (TCP)and the Internet Protocol (IP). TCP/IP, or the Transmission ControlProtocol/Internet Protocol, is a suite of communication protocols used tointerconnect network devices on the internet. TCP/IP can also be used as acommunications protocol in a private network (an intranet or an extranet). There are two IP protocols, TCP and UDP. There are65335 ports that can be assigned to each. Per IANA, the first 1024 (0–1023, socount 0 as a port, too) ports are reserved for specific standardized services.So there are 2048 ports reserved for standardized protocols- 1024 for TCP, 1024for UDP. The Internet works by using a protocol calledTCP/IP, or Transmission Control Protocol/Internet Protocol. ... In base terms,TCP/IP allows one computer to talk to another computer via the Internet throughcompiling packets of data and sending them to right location.