Open Systems Interconnection Model

The Open Systems Interconnection (OSI) Model is a framework that standardizes how different computer systems communicate over a network. It divides communication into seven layers, from physical transmission (like cables and signals) up to application functions (like email or web browsing). Each layer has specific roles and communicates with the layers directly above and below it, ensuring devices from different manufacturers can work together smoothly. This structured approach helps in designing, troubleshooting, and understanding complex network systems by breaking down communication into manageable, well-defined steps.