Briefly explain OSI layer of a network?

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Accepted Answer

OSI layer is a conceptual model that describes the communication functions of a network.

OSI stands for Open Systems Interconnection.
It has 7 layers, each with a specific function.
Layer 1 is the physical layer, responsible for transmitting raw data.
Layer 2 is the data link layer, responsible for error-free transmission of data.
Layer 3 is the network layer, responsible for routing and addressing.
Layer 4 is the transport layer, responsible for end-to-end communication.
Layer 5 is the session layer, responsible for establishing and managing connections.
Layer 6 is the presentation layer, responsible for data formatting and encryption.
Layer 7 is the application layer, responsible for user interaction with the network.
Each layer communicates with the layer above and below it.
The OSI model is used as a reference for network design and troubleshooting.

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