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

2. Wi-Fi Technology

3. 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

5. 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 802.11 communications standard for Wireless Local Area Networks (WLANs). Wi-Fi Network connect computers to each other, to the internet and to the wired network.

6. 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.

7. Uses 1.Internet access

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

9. Communications satellite

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

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

12. 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.

13. Wi-Fi CONFIGURATION

15. Wi-Fi CONFIGARATION

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

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

18. Wi-Fi Security Techniques Service Set Identifier (SSID) Wired Equivalent Privacy (WEP) 802.1X Access Control Wireless Protected Access (WPA) IEEE 802.11i

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

20. LIMITATION Interference Degradation in performance High power consumption Limited range

21. 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.”