Wireless Network Computer Science Engineering Technical English II

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Presentation transcript:

Wireless Network Computer Science Engineering Technical English II Prepared by: Jorge Bastos – 1050062 Class – DD Flávio Cruz – 1010488 Class – ED

Wireless Network WiFi (Wireless Fidelity) also known: Wireless Networking Works on radio waves frequency like a normal walkie-talkie Computers can be up to 100 feet (35,5 meters)

Advantages of WiFi No need to plug wires Wireless is the future of connectivity Large variety of material at low costs Simplicity and the large mobility

Adding WiFi to a Computer One of the best things about WiFi is its simplicity! Network card Install the card Install the drivers for the card Find an 802.11 hotspot Access the hotspot.

WiFi's Technology 802.11 nomenclature comes from The Institute of Electrical and Electronics Engineers (IEEE) 802.11b was the first version to reach the marketplace. It is the slowest and least expensive of the three. 802.11a was next. It operates at 5 GHz and can handle up to 54 megabits per second. 802.11g is a mix of both worlds. It operates at 2.4Ghz but it has the 54 megabits per second speed of 802.11a.

Configuring WiFi Newest machines is automatic Access the software for the 802.11 card Search Hotspot Double Click on hotspot desired

Configuring WiFi On older Wifi equipment There is no automatic search feature Know the name of the hotspot (SSID) Know the channel number (between 1 -11)

WiFi Security To secure a Wifi network user needs to create a WEP key to connect. WEP stands for Wired Equivalent Privacy Encryption System 64-bit (original standard, easily broken) 128-bit (more secure, used nowadays)

Setting Up a Hotspot If you want to connect several computers you need to setup a Hotspot Wireless Access Point Router 1) a port to connect to your cable modem or DSL modem 2) a router 3) an Ethernet hub 4) a firewall 5) a wireless access point.

Configuring a New Hotspot Most wireless access points come with default values built-in The SSID -- normally is the manufacturer's name The channel -- normally is channel 6 by default. The WEP key -- The default is to disable WEP