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Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
Wireless networks
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Wireless networks

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  • 1. WIRELESS NETWORKS Submitted by : Akash Singh Chauhan Submitted to : Mayuri Mam
  • 2. Wireless? • A wireless LAN or WLAN is a wireless local area network that uses radio waves as its carrier. • The last link with the users is wireless, to give a network connection to all users in a building or campus. • The backbone network usually uses cables
  • 3. How do wireless LANs work? Wireless LANs operate in almost the same way as wired LANs, using the same networking protocols and supporting the most of the same applications.
  • 4. Hardware CISCO Aironet 350 series Wireless Handheld Terminal Semi Parabolic Antenna BreezeCOM AP
  • 5. Advantages • Ultra-high spectrum efficiency • 5 GHz band is 300 MHz (vs. 83.5 MHz @ 2.4 GHz) • More data can travel over a smaller amount of bandwidth • High speed • Up to 54 Mbps • Less interference • Fewer products using the frequency • 2.4 GHz band shared by cordless phones, microwave ovens, Bluetooth, and WLANs
  • 6. Disadvantages • Cost • 2.4 GHz will still has >40% cost advantage • Range At equivalent power, 5 GHz range will be ~50% of 2.4 GHz • Power consumption • Higher data rates and increased signal require more power
  • 7. Applications • Building-to-building connections • Video, audio conferencing/streaming video, and audio • Large file transfers, such as engineering CAD drawings • Faster Web access and browsing • High worker density or high throughput scenarios • Numerous PCs running graphics-intensive applications
  • 8. CONCLUSION • There is little wonder why wireless networks have become so ubiquitous the last few years. Wireless access points are inexpensive, easy to install, and most of all, handy. Although wireless networking can make life a lot easier for your users though, they can also become a security nightmare.
  • 9. References • CISCO Packet Magazine, 2nd Quarter 2002 http://www.cisco.com/en/US/about/ac123/ac11 4/ac173/ac168/about_cisco_packet_issue_hom e.html • 3Com University – Wireless LANs A Technology Overview www.3com.com/3comu • National Institute of Standards and Technology Wireless Network Security http://csrc.nist.gov/publications/drafts/draft- sp800-48.pdf
  • 10. THANK YOU

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