The Wonderful World of Wi-Fi  (www)

By The Ultimate Cougar Fan (BYU rocks!!!!!!!)


Cancer is a horrible disease.  Some people get cancer from smoking. Others get cancer from their family history.  There is a rumor going around that you can get cancer from Wi-Fi.  Is this rumor true?  Or is it a lie?  You will have to read my report to find out. My report also tells what  wifi is ,does and a few surprises.

If you think www stands for World Wide Web, I got some great news for you.  Have you ever heard of the Wonderful World of Wi-Fi?

What W-Fi is and does

This paragraph is about what Wi-Fi is. Wifi is a system that you can hook something up to the Internet with out wirers. Wifi doesnŐt have messy wires so you can easily hook up to the Internet. This paragraph is about what Wi-Fi does.  Wifi for example has robots, toys and game system. You can hook them up to the Internet and watch your house from your computer. What does Wi-fi stand for? Wi-fi stands for wireless fidelity J


What is dangerous about Wi-Fi? L According to David Pogue, Wi-Fi can be dangerous.  Some times, for example, you can get cancer from the radiation!  You can also get your password hacked. If you want to hack some ones computer you donŐt need any special hacking tools.  You can just get on your computer in a coffee shop and hack someoneŐs password and find all the information you want on that person. É


How does Wi-Fi work?

This paragraph is about how Wi-Fi works.  According to www. The typical Wi-Fi setup contains one or more Access Points (APs) and one or more clients. An AP broadcasts its  SSID (Service Set Identifier, Network name) via packets that are called  beacons, which are broadcasted every 100ms. The beacons are transmitted at 1Mbps, and are relatively short and therefore are not of influence on performance. Since 1Mbps is the lowest rate of Wi-Fi it assures that the client who receives the beacon can communicate at at least 1Mbps. Based on the settings (i.e. the SSID), the client may decide whether to connect to an AP. Also the  firmware running on the client Wi-Fi card is of influence. Say two AP's of the same SSID are in range of the client, the firmware may decide based on signal strength (Signal-to-noise ratio) to which of the two AP's it will connect. The Wi-Fi standard leaves connection criteria and roaming totally open to the client. This is a strength of Wi-Fi, but also means that one wireless adapter may perform substantially better than the other. Since Windows XP there is a feature called zero configuration which makes the user show any network available and let the end user connect to it on the fly. In the future wireless cards will be more and more controlled by the operating system. Microsoft's newest feature called SoftMAC will take over from on-board firmware. Having said this, roaming criteria will be totally controlled by the operating system. Wi-Fi transmits in the air, it has the same properties as a non-switched ethernet network. Even collisions can therefore appear like in non-switched ethernet LAN's.


History of Wi-fi

According to Back in 1991 Wi-Fi was invented by NCR Corporation/AT&T (later on Lucent &   Agere Systems) in  Nieuwegein, the Netherlands. Initially meant for cashier        systems the first wireless products were brought on the market under the name WaveLAN with speeds of 1Mbps/2Mbps. Vic Hayes who is the inventor of Wi-Fi has been named 'father of Wi-Fi' and was with his team involved in designing standards such as IEEE 802.11b, 802.11a and 802.11g. In 2003, Vic retired from Agere Systems J


I hope you liked my report and thought it was great. I also hope you learned something about the Wi-Fi system. Also I hope you liked it to.