Реферат: Future Of Internet Over Wireless Essay Research

Future Of Internet Over Wireless Essay, Research Paper

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TCP/IP AND THE FUTURE OF THE INTERNET OVER WIRELESS MEDIUM

By Robert Beken

ISM 410

Fifteen Years ago computers were just an expensive typewriter, calculator, and entertainment center thrown together in one box. People transferred their tiny files with floppy disk. The computer itself seldom had a hard drive. It was an amazing feat to dial into a computer bulletin board, and talk to other users of systems. Networking computers was more or less unheard of. The only exception were mainframes that might span several buildings, with terminals, or dial in terminals. The internet, and TCP/IP were developed by the Department of Defense so as to be able to link together several LANs around the country. Each individual system was built sometimes by different vendors, and were sometimes incompatible. For example I can remember my father telling me while he was working at Perkin Elmer that they had to link from San Diego to Cheyenne Mountain in Colorado with two dissimilar systems. TCP/IP was a robust common language that could be used.

In part the same is true today, The Arpanet is no longer the driving factor in the internet, but business. Computers using a myriad of operating systems, from a DEC to a Unix box, to someone running Windows 2000, they all can speak the same language.

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I’m going to overview how TCP/IP works into the entire system. Keeping in mind the OSI reference model (Fig. 1). While TCP and/or

UDP are running at the Transport Layer IP is

running at the Session Layer. The IP protocol

handles fragmentation of packets. Fragmentation

is essential, because some networks allow a very

large packet size, and others do not packets

sometimes must be fragmented. The presentation

layer is where the TCP/IP “languages” are used

such as FTP, SMTP, HTTP, and Gopher. Fig. 2

demonstrates the overlapping of the Ethernet Frame,

the IP packet, and TCP packet. (Fig. 1) 7 layers of the OSI Model

The TCP packet information is placed inside the IP Packet which in turn, fits inside the Ethernet frame. The last is the Ethernet frame. Everything else is squeezed into that frame.

The Internet is changing daily, and the future is currently

unforeseeable. The future of the internet is teetering on a variety

of political issues, new and growing technology, and the

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economy. The Internet is no longer purely half TCP/IP and half Computer. It’s now a sloppy mix of politics, get rich quick schemes, scandal, and major internet players buying out media giants. The recent controversy over internet taxes shows what a large part of

the world that this medium has become. Gov Gray Davis a California Democrat told CBS Reporters “ In the short term, I do not favor the application of the sales tax for the internet, gecause I certainly don’t want to kill the golden goose that is laying the egg” The president outlined other challenges made by the internet to governments.

“We need to think about how we can reasonably make more new markets or help

to facilitate them, and how we can remove barriers without undermining public interest to the private sector’s development, and how we can make government more user friendly.” Even Online Voting was discussed. The fact that the government is getting it’s fingers deep into the internet shows that the internet must be the next best thing since sliced bread.

It seems that Wireless technology is the next step in communication between computing devices. I will explain several different types of wireless technology, and how it fits into the future of the internet

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