FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -OSI (Open Systems Interconnection) is a reference model for how applications communicate over a network.

Detailed explanation-2: -The Open Systems Interconnection (OSI) model describes seven layers that computer systems use to communicate over a network. It was the first standard model for network communications, adopted by all major computer and telecommunication companies in the early 1980s.

Detailed explanation-3: -This model is called the ISO OSI reference model because it deals with systems that open for communication to the other system. So, An OSI (open system interconnection )reference model is a set of protocols that allows any two different systems to communicate regardless of their underline architecture over the network.

Detailed explanation-4: -The 7 layers of the OSI model. The layers are: Layer 1-Physical; Layer 2-Data Link; Layer 3-Network; Layer 4-Transport; Layer 5-Session; Layer 6-Presentation; Layer 7-Application.

Detailed explanation-5: -Open Systems Interconnection (OSI) is a framework for transmitting messages between any two entities in a network. Open systems interconnection defines seven layers of functions: Physical Layer – This layer includes the physical equipment involved in the data transfer, such as the cables and switches.