Video encyclopedia

OSI model


What is the OSI model? Memorize each of its seven layers


OSI Model Layer 3 - Network


MicroNugget: What is the OSI Reference Model?


Knowledge Nugget: OSI Model - Layer 1


Application Layer explained | Application Layer Tutorial |Application layer Protocols | OSI model

The Open Systems Interconnection model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard protocols. The model partitions a communication system into abstraction layers. The original version of the model defined seven layers.
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    • History 

    • Definitions 

    • Layer architecture 

    • Cross-layer functions 

    • Programming interfaces 

    • Comparison with TCP/IP model