OSI Model - 2
Open System Interconnection (OSI) Model - 2 Summary on what we have studied on last tutorial :- Open System Interconnection (OSI) Model was developed by the International Standards Organization (ISO) describes the flow of information from one computer to another. All the layers of the OSI reference model use different protocols. Physical layer is the first or the bottom most layer of the OSI model. This layer is used to establish or terminate a connection to a communication medium. It also defines the electrical and mechanical specifications like cables, connectors and signalling options of the medium. Data Link Layer is second layer of the OSI model. It handles data transfer between network and the physical layers. Data a link layer receives the Data from the network layer. It adds Header and Trailer of the data and passes data to the physical layer. (1.3) Network Layer :- This is ...