The OSI Model: Overview

• The Open Systems Interconnection (OSI) model is a conceptual framework used to understand and implement network protocols. It divides the network communication process into seven distinct layers, each with specific functions and responsibilities.
• The Seven Layers of the OSI Model

1. Physical Layer: Concerned with the physical connection between devices and the transmission of raw bit streams over a physical medium.
2. Data Link Layer: Provides data transfer between nodes and manages error detection and correction from the physical layer.
3. Network Layer: Manages device addressing, identification, and forwarding of packets across multiple networks.
4. Transport Layer: Provides full data transfer and manages end-to-end communication between hosts.
5. Session Layer: Establishes, manages, and terminates communication sessions between applications.
6. Presentation Layer: Translates data between the application layer and the network, performing data encryption, compression, and translation.
7. Application Layer: Provides network services such as e-mail, file transfer, and web browsing directly to user applications.

The OSI model helps standardize networking and makes it easier to develop and troubleshoot network systems. For more detailed information.

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