If you spend any amount of time at all dealing with networking design or implementation issues, or learning about how the various protocols operate, the names and numbers of the various layers will eventually become “second nature”. The Transfer Control Protocol/Internet Protocol (TCP/IP) is older than the OSI model and was created by the US Department of Defense (DoD). The goal is to set a standard for how communicating over a network should look. Title says it all, how do you guys explain this model or remember it and what each part does? OSI vs. TCP/IP Model. The Open Systems Interconnection (OSI) layer model is a way of describing communications by computer systems over networks. The basic reference model is just another way to describe the 7-layer model. In plain English, the OSI model helped standardize the way computer systems send information to each other. The TCP/IP model was very loosely described as having layers. osi 7 layer model The OSI, or Open System Interconnection, model defines a networking framework for implementing protocols in seven layers. Control is passed from one layer to the next, starting at the application layer in one station, proceeding to the bottom layer, over the channel to the next station and back up the hierarchy. The OSI model stands for the “Open Systems Interconnection model”. Here is a mnemonic, by which it will be easier to remember the OSI Layer Name in sequence from Layer 1 to Layer 7: Please … I've at least memorized the OSI model but still lost on being able to explain and remember it easily. Yes, that’s right, it predates the noted OSI model. The OSI model is a conceptual framework that is used to describe how a network functions. D. daveshel Diamond Member. You might see this model described as the Internet model or even the DoD Model. OSI Layer Mnemonic. It is a conceptual model that is used to understand computer networks. I really like the way Microsoft describes the OSI model. Before I describe about the OSI layer, you should know how exactly it works in sequence, which would help in remembering it. A key difference between the models is that TCP/IP is simpler, collapsing several OSI layers into one: OSI layers 5, 6, 7 are combined into one Application Layer in TCP/IP From Chapter 3 Revision Video of IT. I'm having trouble myself, TCP/IP stack i'm totally lost on. Very Easy way to remember OSI & TCP/IP Model for Exams. The OSI model is not protocol specific, but instead different protocols belong in different layers. (nic, cabling, etc) Data turns that signal into data by creating frames. Physical is about physically creating and moving the electronic signal. Oct 10, 1999 In this model, a layer in your network works with the layers immediately above and below it, meaning tools in Layer 4 work directly with tools in Layers 3 and 5. 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