present technology

1. SHIRDI SAI INSTITUTE OF SCIENCE AND
ENGINEERING COLLEGE

2. WI-FI TECHNOLOGY
CONTENTS
Introduction
WI-FI Technology
Wi-Fi Network Elements
Advantages
Limitations
Applications
Conclusion
B.SANDHYA
159A1A0505

6. Wi-Fi Technologies
• Wi-Fi Network Use Radio Technologies
to transmit and receive data at high
speed
IEEE 802.11b
IEEE 802.11a
IEEE 802.11g

7. IEEE 802.11b
Appear in late 1999
11 Mbps(theoretical speed)-with 30mRange
4-6Mbps(actual speed)
100-150 feet range
Most popular, Least Expensive

8. IEEE 802.11a
Introduced in 2001
Operate 5 GHZ(Less popular)
54 Mbps(Theoretical speed)
50-75 feet range
more expensive
No compatible with ’b’

9. IEEE 802.11g
• Introduced in 2003
• Combine feature of both(a,b)
• 100-50 feet range
• 54 Mbps speed
• 2.4 GHZ radio frequency
• Compatible with ’b’

11. Wi-Fi NETWORK ELEMENTS
• Access point:-The AP is wireless LAN transceiver
that connects one or many wireless devices
simultaneously to the internet
• Wi-Fi card:-They accepts the wireless signals and
relay information. They can be internal and
external
• Safeguards:-Anti-virus software protect network
from uninvited users and keep information
secure

12. ADVANTAGES
• Mobility
• Easy to install
• Good flexibility
• Cost
• Reliability
• Speed is high

14. LIMITATIONS
• High power consumption
• Limited range
• Degradation in performance

15. APPLICATIONS
Small businesses
Large corporations
Campuses&House

16. CONCLUSION
Wi-Fi is a simple and cost-effective way to
internet without need of wireless
Wi-Fi is a growing popularity because of
decreasing cost gives freedom to user