This tutorial explains OSI Reference model step by step. Learn the seven layers of OSI model; Application, Presentation, Session, Transport, Network, Data Link and Physical in detail along with their functions.
The OSI (Open System Interconnection) Reference Model is the comprehensive set of standards and rules for hardware manufacturers and software developers. By following these standards, they can build the networking components and software applications which work in dissimilar environments. In 1984, the ISO (International Organization for Standardization) published this Model.
The OSI model not only provides a framework for creating and implementing networking standards, devices, and internetworking schemes but also explains the networking from a modular perspective, making it easier to understand and troubleshoot.