What is WiFi?
WiFi is a simple name
for a wireless local
It allows users to connect
two or more computers
to the Internet wirelessly.
Who uses WiFi?
Anyone looking to connect multiple computers
wirelessly to the same Internet connection.
People who want to use the Internet almost anywhere.
Libraries, schools, cafeterias.
How Does WiFi Work?
Wireless adapter translates and sends data.
Wireless router recieves and translates data.
Data is sent the Internet using Ethernet cable.
Process works in reverse.
The Parts Needed to
Connect to a Hotspot.
Plugs into USB port of PC card slot.
Computer will inform when wireless networks are
Creating Your Own WiFi Network.
A port to connect to your cable or DSL modem.
An Ethernet hub.
A firewall .
A wireless access point.
HowStuffWorks "Building a Wireless Network"
Protecting Your WiFi Network.
After you setup your wireless router you can:
Select a channel different from other WiFi networks that
may be interfering with your connection.
Select a username and password.
Allows only users you approve.
Keeps out strangers.
WiFi Radio Waves.
Frequencies of 2.4 or 5 GHz.
High frequency allows to carry more data.
Waves travel in 802.11 networking standards.
You can purchase different standards.
Systems that use WiFi.
Home systems and laptops.
Cost of Setting Up a WiFi System.
WiFi Router $35-$120
WiFi Adapter $40-$70
WiFi is easy to set up
You need a transmitter, router, and Internet cable
It gets data from the internet to you wirelessly through
It is being widely used by different users in different
areas all over the world
Brain, Marshall. "How WiFi works?." How Stuff Works.
A Discovery Company. 5 Dec 2008
Breeding , Marshall. "Wireless Network
Configuration." 41(2003) 21-30. 5 Dec 2008