What is TCP/IP model?
The '''TCP/IP model''' (Transmission Control Protocol/Internet Protocol) is a model with four layers<ref>{{Cite web|title=What is TCP/IP and How Does it Work? -- TechTarget|url=https://www.techtarget.com/searchnetworking/definition/TCP-IP|access-date=2024-06-07|website=Networking|language=en}}</ref> which is for both modelling current [[Internet]] architecture, and providing a set a rules that govern all forms of transmission over a [[network]].<ref>{{Cite web|title=Best Guide To Understand What Is TCP/IP Model {{!}} Simplilearn|url=https://www.simplilearn.com/tutorials/cyber-security-tutorial/what-is-tcp-ip-model|access-date=2024-06-07|website=Simplilearn.com|language=en-US}}</ref> [[DARPA]], an agency of the [[United States Department of Defense]], created it in the 1970s. It evolved from [[ARPANET]], which was an early [[wide area network]] and a predecessor of the [[Internet]]. The [[TCP/IP]] Model is sometimes called the ''Internet Model'' or less often the ''[[United States Department of Defense|DoD]] Model.'' This model was being made at the same time as the [[OSI model|OSI Model]] was created. The TCP/IP model is not the same as the OSI Model. It was influenced by the model, which is why many names of the different layers are the same. The TCP/IP model describes a set of general design guidelines and implementations of specific [[networking protocols]] to enable computers to communicate over a [[Computer network|network]]. TCP/IP provides [[end-to-end connectivity]] specifying how [[data]] should be [[Format|formatted]], addressed, [[transmitted]], [[routing|routed]] and received at the destination. Protocols exist for a variety of different types of communication services between computers. TCP/IP has four [[abstraction layer]]s as defined in [[RFC:1122|RFC 1122]]: link layer, IP layer, transport layer and application layer. People often compare this layer architecture with the seven-layer [[OSI Reference Model]]; using terms such as ''Internet reference model''. This is incorrect, however, becaus