Lec-3: TCP/IP Protocol Suite | Internet Protocol Suite | OSI vs TCP/IP

TCP/IP stands for Transmission Control Protocol/Internet Protocol and is a suite of communication protocols used to interconnect network devices on the internet. TCP/IP is also used as a communications protocol in a private computer network (an intranet or extranet).

It provides an end-to-end connectivity by specifying how data should be packetized, addressed, transmitted, routed and received on a TCP/IP network.

OSI refers to Open Systems Interconnection whereas TCP/IP refers to Transmission Control Protocol.
OSI has 7 layers whereas TCP/IP has 4 layers.
OSI header is 5 bytes whereas TCP/IP header size is 20 bytes.
OSI follows a vertical approach whereas TCP/IP follows a horizontal approach.

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