wifi....principle

2. Date:13/06/2015
WiFi
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3. What is WiFi…?
● WiFi is a simple name
for a wireless local
networking area.
● It allows users to
connect two or more
computers to the
Internet wirelessly

4. Who uses WiFi…?
● Anyone looking to connect
multiple computers
wirelessly to the same
Internet connection.
● People who want to use the
Internet almost anywhere.
● Students
● Teachers
● Libraries
● Schools
● Cafeterias
● Etc..

5. How Does WiFi works?
● Radio waves.
● Wireless adapter translates and sends
data.
● Wireless router recieves and translates
data.
● Data is sent the Internet using Ethernet
cable.
● Process works in reverse.

6. The Parts Needed to
Connect to a Hotspot.
● Wireless Transmitter.
● Built-in Transmitter.
● Wireless Adapter.
● Plugs into USB port of PC card slot.
● Computer will inform when wireless
networks are available.

7. Creating Your Own WiFi
Network.
● Wireless Router.
● A port to connect to your cable
● or DSLmodem.
● A router.
● An Ethernet hub.
● A firewall .
● A wireless access point.
www.computer.howstuffworks.com/wireless-network3.htm

8. 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

9. 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.
● 802.11a.
● 802.11b.
● 802.11n.
● 802.11g.

10. Systems that use WiFi.
○ Computers.
Home systems and laptops.
○ Game consoles.
Xbox, Playstation
○ Cell phones.
iPhone, Blackberry.
○ Printers.

11. Cost of Setting Up a WiFi
System.
● WiFi Router - $35-$120 WiFi
● Adapter - $40-$70

12. Summary.
● WiFi is easy to set up
● You need a transmitter, router, and
Internet cable
● It gets data from the internet to you
wirelessly through radio waves
● It is being widely used by different
users in different areas all over the
world

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United States of America.
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