the OSI model is an idea. it is abstract it has no value without implementation. TCP/IP is an implementation. it was shaped by the concept of the OSI model. the OSI model is unchanging, implementations like TCP/IP conform to the mode Solution the OSI model is an idea. it is abstract it has no value without implementation. TCP/IP is an implementation. it was shaped by the concept of the OSI model. the OSI model is unchanging, implementations like TCP/IP conform to the mode.