Why was the OSI model developed?

The OSI model, which stands for Open Systems Interconnection model, was developed to establish a standard framework for computer communications. Prior to its development, computer systems had different communication rules and protocols, which made it difficult for systems of differing brands or types to communicate effectively. The aim of the OSI model, introduced by the International Organization for Standardization (ISO) in 1984, was to promote interoperability and standardize the way computer systems send and receive data across networks.

Key reasons for its development include:

1. Interoperability: The OSI model aimed to allow diverse communication systems to communicate using standard protocols. It provided a universal set of rules and standards that enabled hardware and software from different manufacturers to function together seamlessly.

2. Modularity: The model divided the whole telecommunication process into seven different layers, from physical implementation of sending bits over a communications medium to the final layer where applications could access network services. This layering allowed for modularity in implementation, meaning different layers could be developed independently as long as they adhered to the defined specifications of the model. This helps in simplifying the network design and troubleshooting.

3. Standardization: By creating a standardized model, the OSI aimed to facilitate product development and interoperability. Companies could develop products to meet these standards, ensuring compatibility and encouraging a wider acceptance of networking technologies.

4. Simplification of Network Teaching and Learning: By providing a structured model, the OSI framework helps students and professionals in the field of