What Is Osi Layer Model?

The OSI (Open Systems Interconnection) layer model is a seven-layer model of computer networking that describes how information is transferred from one device to another. It provides a framework for understanding the components of a network and how they interact. Each layer of the OSI model has specific functions and protocols that must be followed in order for a successful communication. The layers are divided into two groups, the upper layers and the lower layers. The upper layers are responsible for providing the user services, such as file transfer and email, while the lower layers are responsible for transmitting data over physical media, such as cables and wireless networks. The OSI model is the most widely accepted networking model and is used as a reference for communication protocols.