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Ess. 220-701

Ch. 17 Learning Wireless

QuestionAnswer
wireless access point (WAP) centrally connects wireless nodes in the same way that a hub connects wired Ethernet.
carrier sense multiple access/collision avoidance (CSMA/CA) Networking scheme used by wireless devices to transmit data while avoiding data collision, which wireless nodes have difficulty detecting
Ad hoc mode peer-to-peer, each wireless node in direct contact with every other node in a decentralized free-for-all
infrastructure mode use one or more WAPs to connect the wireless network nodes to a wired network segment
service set identifier (SSID) network name
MAC address filtering a method that enables you to limit access to your wireless network based on the physical, hard-wired address of the units wireless NIC
Wired Equivalent Privacy (WEP) attempt to secure transmitted data. Uses 40 & 104 bit encryption
Wi-Fi Protected Access (WPA) used to address the weakness of WEP and act a an upgrade to WEP.
Wi-Fi Protected Access 2 (WPA2) lockdown wireless networks. Uses Advanced Encryption Standards (AES) among other improvement, to provide a secure wireless enviroment.
IEEE 802.11 wireless ethernet, Wi-Fi
802.11a 5 GHz freq.,up to 54 Mbps, 150 ft. range
802.11b 11 Mbps, 300 ft. range, 2.4 GHz freq.
802.11 g 54 Mbps, 300 ft. range, 2.4 GHz freq., backwards compatible
802.11n 100+ Mbps, 300+ft range, 2.4 and 5 GHz freq. backwards compatible
multiple in/multiple out (MIMO) enable a device to make simultaneous connections
Infrared Data Association (IrDA) communication through infrared devices w, speeds up to 4 Mbps
Bluetooth wireless tecnology designed to create small wireless networks preconfigured to do very specific jobs, but not replace full-function networks or Wi-Fi.
personal area networks (PAN) small wireless network created w/ bluetooth technology and intended to link PCs and other peripheral devices.
cellular wireless network enables you to connect to the Internet through a network-aware PDA
Created by: Jefferywrght
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