6.7 Conclusion
6.7 Conclusion In this chapter, we learned how different organizations have come together to define standards for the Internet. ISO has developed the OSI reference model to provide a structure to define the different steps within a protocol. We also learned how the IEEE has defined the TCP/IP, which has become the common backbone of the Internet. In our discussion on networking, we reviewed how all the pieces of the TCP/IP suite work together. We begin with the name of the resource we wish to access. Then, using DNS, we are able to find the IP address of any public resource anywhere on the Internet. The IP address tells us specifically to which network the resource belongs. For resources on our own network, we are able to use ARP to acquire the hardware address of the resource. Using the hardware address, we are able to communicate with the other system. In the event that the resource resides on another network, the message is passed through a router. Using RIP, the router determines the most efficient path to the remote system. The router for this path communicates with the remote network on behalf of the client. How smoothly the different pieces of the Internet work together, how well we can establish communication to distant systems, is wondrous. As we go forward in our discussion of IEBI, we should keep this in mind. We should be vitally aware of how such a complex and technical system functions with such reliability. |
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EAN: 2147483647
Pages: 113