Computer Networks 06: The OSI Model
The Open Systems Interconnection (OSI) model is an International Organization for Standardization (ISO) standard designed to facilitate communication between different systems across diverse network architectures. ISO is the organization; OSI is the model. Introduced in the late 1970s. The OSI model is not a protocol; it is a model for understanding and designing a network architecture that is flexible, robust, and interoperable. The OSI model was intended to be the basis for the creation of the protocols in the OSI stack. Layered Architecture The OSI model is a layered framework for the design of network systems that allows communication between all types of computer systems without requiring changes to the underlying hardware and software. It achieves this by dividing the network communication process into seven distinct layers. Each layer is responsible for a specific aspect of the communication process moving information across a network. While developing the model, the designers sim…
