In the OSI model it has 7 different layers which I will explain them using the above example. Similarities and Differences between OSI and TCP/IP Model. In fact, it's not even tangible. OSI Model Advantages and Basic Purpose Explained. The TCP/IP model, sometimes referred to as a protocol stack, can be considered a condensed version of the OSI model. Create a mnemonic to remember the layers. The OSI Model (Open Systems Interconnection Model) is a conceptual framework used to describe the functions of a networking system. The Open System Interconnection model defines a networking framework to implement protocols in seven layers.There is really nothing to the OSI model. Well first things first. There is a logical flow within seven layers of OSI model. At the receiving end then, the OSI model will strip away the header information from the file as it works it’s way up the OSI model. The OSI model doesn't perform any functions in the networking process. Let us break down these 7 layers individually and understand it. Layer 7 – Application Layer The OSI model characterizes computing functions into a universal set of rules and requirements in order to support interoperability between different products and software. Every layer must complete its designated function before the data unit is passed to the next layer. I had the same problem understanding OSI model in Computer Networks subject. This page you are reading is stored on our website and you are most probably using a web browser to read this. The Open System Interconnection (OSI) model is one of the core concepts that administrators need to come to grips with when managing a network.The OSI model acts as a roadmap of what is happening within a network and helps to see how information is transferred across a network. End To End Connections: • Handles transportation issues between hosts • Ensures data transport reliability • Establishes, maintains and terminates virtual circuits • Provides reliability through fault detection and recovery • Information flow control The OSI model has proved itself a worthy … Real World Example . This tutorial is the first part of the article. Due to popular demand, InetDaemon has written an operational example of how the OSI model can be used to describe what happens when you browse a web page on a web site. Layer 2 (Internet): This layer is similar to the OSI model’s L3. The header information that YOUR Data-Link layer adds for example, the remote OSI model’s Data-Link layer will strip that header information away. https://www.imperva.com/learn/application-security/osi-model https://www.extrahop.com/company/blog/2019/the-osi-model-explained You need to remember all the layers and only then you can move forward with understanding them. 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