Created by: Prashant More Dipak Chavan Ajinkya Khude WI-FI

Wi-Fi Technology

CONTENTS Introduction Wi-Fi Technologies How a Wi-Fi Network Works Uses Wi-Fi Network Topologies Applications of Wi-Fi Wi-Fi Security Advantages/ Disadvantages of Wi-Fi

INTRODUCTION Wireless Technology is an alternative to Wired Technology, which is commonly used, for connecting devices in wireless mode. Wi-Fi (Wireless Fidelity) is a generic term that refers to the IEEE communications standard for Wireless Local Area Networks (WLANs). Wi-Fi Network connect computers to each other, to the internet and to the wired network.

How a Wi-Fi Network Works Walkie talkies. Base station - access point - installing access point to internet conn Wi-Fi device connect – 30 users Range - Indoors 100 – 150 feet - Outdoors 300 feet. Large Network – access point connect each other.

Uses 1.Internet access

2.Airport Wi-Fi 3.City-wide Wi-Fi 4.Campus-wide Wi-Fi

Communications satellite

1.Telephony 4.Military uses 2.Satellite television 3.Mobile satellite technologies

Wi-Fi Network Topologies AP-based topology (Infrastructure Mode) Peer-to-peer topology (Ad-hoc Mode) Point-to-multipoint bridge topology

AP-based topology The client communicate through Access Point. BSA-RF coverage provided by an AP. ESA-It consists of 2 or more BSA. ESA cell includes 10-15% overlap to allow roaming.

Wi-Fi CONFIGURATION

Wi-Fi CONFIGARATION

Wi-Fi APPLICATION Home Small Businesses or SOHO Large Corporations & Campuses Health Care Wireless ISP (WISP) Travellers

Wi-Fi Security The requirements for Wi-Fi network security can be broken down into two primary components: Authentication  User Authentication  Server Authentication Privacy

Wi-Fi Security Techniques Service Set Identifier (SSID) Wired Equivalent Privacy (WEP) 802.1X Access Control Wireless Protected Access (WPA) IEEE i

ADVANTAGES Mobility Ease of Installation Flexibility Cost Reliability Security Use unlicensed part of the radio spectrum Roaming Speed

LIMITATION Interference Degradation in performance High power consumption Limited range

CONCLUSION For now Wi-Fi provides broad band internet access to specially outfitted PCs and Laptops. But in future may be hotspots be wireless. By Wi-Fi our time and money are saved. The technologies have help Wi-Fi “Hotspots are becoming more popular throught urban envirnment.”