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CHAPTER 8 Wireless LAN

CHAPTER 8 Wireless LAN. Wireless Network concepts and standard Wireless LAN Security. Chapter Objective. On completion of this chapter, you will be able to perform the following tasks: Understand Wireless network concepts Understand Wireless LAN standard (IEEE802.11)

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CHAPTER 8 Wireless LAN

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  1. CHAPTER 8Wireless LAN Wireless Network concepts and standard Wireless LAN Security 640-802 CCNA

  2. Chapter Objective 640-802 CCNA • On completion of this chapter, you will be able to perform the following tasks: • Understand Wireless network concepts • Understand Wireless LAN standard (IEEE802.11) • Understand basic Wireless network security

  3. Wireless LAN 640-802 CCNA Transmitting a signal using the typical 802.11 specifications works a lot like it does with a basic Ethernet hub: They’re both two-way forms of communication, and they both use the same frequency to both transmit and receive, often referred to as “half-duplex”. Wireless LANs (WLANs) use radio frequencies (RFs) that are radiated into the air from an antenna that creates radio waves.

  4. Unlicensed Frequencies 640-802 CCNA

  5. IEEE 802.11 Standards 640-802 CCNA Here are the most popular standards in use today: 802.11b: 2.4Ghz, maximum bandwidth of 11Mbps 802.11g: 2.4Ghz, up to 54Mbps 802.11a: 5Ghz, up to 54Mbps

  6. IEEE 802.11b CSMA/CA 640-802 CCNA CSMA/CA = Carrier Sense Multiple Access/Collision Avoidance.

  7. ISM 2.4 Ghz Channels 640-802 CCNA

  8. UNII 5Ghz Band 640-802 CCNA

  9. Range Comparison 640-802 CCNA

  10. Basic/Extended Service Set (BSS/ESS) 640-802 CCNA

  11. Wireless Security 640-802 CCNA All Wi-Fi Certified wireless LAN products are shipped in "open-access" mode, with their security features turned off. SSID, WEP and MAC authentication 802.11i WPA and WPA 2

  12. Blank for pagination 640-802 CCNA

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