Post on 14-Jun-2015
transcript
WI-FI AND IT’S APPLICATIONS
GROUP MEMBERS
M.Amin Zafar
Saad Mazhar
M.Azfer
CONTENTS
What is Wi-FiHistoryUsesBenefitsSecurity Goals And StrategiesRangeApplication Of Wi-Fi Technology
What is Wi-Fi?
Wi-Fi stands for Wireless-Fidelity. It’s a wireless technology brand that is owned by Wi-Fi Alliance. Alliance is a consortium of separate and independent companies agreeing to a set of common interoperable products based on the family of IEEE 802.11 standards.
History
802.11 technology has its origins in a 1985 ruling by the US Federal Communications Commission that released the ISM band for unlicensed use.
In 1991 NCR Corporation with AT&T invented the precursor to 802.11 intended for use in cashier systems.
Vic Hayes has been called the “Father of Wi-Fi“, he was involved in designing the initial standards within the IEEE.
In 1999, the Wi-Fi Alliance was formed as a trade association to hold the Wi-Fi trademark under which most products are sold.
Uses• It transfer photos & videos from your digital
camera.
• Share files with nearby computers.• Send documents to your printer from any computer or
Smartphone.
Uses
• Stream audio to any speakers in the house.
Uses
• Stream movies to any TV in the house.
• Use your Smartphone as a remote control.
• Sync your music library, photo library, or other files with your Smartphone USB-free.
Benefits• Wireless Ethernet : Wi-Fi is an Ethernet replacement. Wi-Fi
and Ethernet, both IEEE 802 networks , share some core elements.
• Extended Access : The absence of wires and cables extends access to places where wires and cables cannot go or where it is too expensive for them to go.
• Cost Reduction : The absence of wires and cables brings down cost, no need for trenching, drilling and other methods that may be necessary to make physical connections.
• Mobility : Wireless means you have the freedom to change your location without losing your connection
• Flexibility : Create opportunities for new applications as well as the possibility of creative new solutions for legacy applications.
Security Goals & Strategies
• Mutual Authentication : The goal of mutual authentication is to make sure that both the client and AP are who they say they are.
• Private Communication :The goal of privacy addresses the challenge of sending information through open space, which is accessible to everyone, friend and foe alike.
• Data Integrity : The goal of integrity means that the data is intact when it is received.
Range
• A typical wireless access point using 802.11b or 802.11g with a stock antenna might have a range of 32 m (120 ft) indoors and 95 m (300 ft) outdoors. IEEE 802.11n.
• Wi-Fi in the 2.4 GHz frequency block has slightly better range than Wi-Fi in the 5 GHz frequency block which is used by 802.11a and optionally by 802.11n.
• The maximum amount of power that a Wi-Fi device can transmit is limited by local regulations, such as FCC Part 15 in the US.
• Wi-Fi has fairly high power consumption compared to some other standards.
Application Of Wi-Fi Technology
• There are no boundaries if you are using Wi-Fi.
• Computers can be interconnected and enable check and balance whether employs are working or not.
• A project can be presented to all the members whether in the form of excel sheet, ppt or word document.
Application Of Wi-Fi Technology
• If 2 or 3 members of your family have their own laptops they would be able to share their data, files and photos..
• Many public places are also supplied with Wi-Fi connectivity to access internet like cafe, restaurants, and clubs to attract the clients.