Chapter 2 - Network hardware. The layered model that dominated data communication and networking literature before 1990 was the Open Systems Interconnection (OSI) model. Everyone believed that the OSI model would become the ultimate standard for data communications - but this did not happen. The TCP/IP protocol suite became the dominant commercial architecture because it was used and tested extensively in the Internet; the OSI model was never fully implemented. In this chapter, we first briefly discuss the OSI model and then we concentrate on TCP/IP as a protocol suite. |
