Tag: ccna

OSI Model (Open Systems Interconnection Model) is simply a reference tool, a standardised Reference Framework for conceptualising data communications between networks. OSI was the first conceptual model that characterized and standardized the communication functions of a Network system without regard to its underlying internal structure and technology. OSI is a Vendor Neutral Model. Before OSI Model, each vendor used to use its own network model to manufacture Network equipment. So, one vendor’s equipment & network was not compatible with another vendor’s equipment. Buyers were bound to buy only from one vendor. For example, if you were buying IBM Computers then Read More …