OSI Basic Reference Model

OSI Basic Reference Model - Architecture model that describes how communication can be executed between systems of different vendors. Basically this model is the logical structure of network operations that have been standardized by the ISO (which consists of seven layers). This model allows a computer or device that meets the requirements of OSI to be able to interact with other equipment that meets the requirements of OSI.
to -7 layer starts from the bottom of the physical, data link, network, transport, session, presentation, and application