Ch 20. Computer Network Wireless Connections
Bluetooth 3 G Mobile Wi. Fi 3 Mbit/s 7. 2 Mbit/s 54 Mbit/s Coverage ~10 M City – wide ~50 M Cost Free $200 - $400 /month Free Mobile phone headset Mobile phone Notebook Speed Common usage
• More secure than wireless • Higher reliability: No interference due to obstruction like walls
• Neat and clean, no untidy cables • Flexibility around the home, can connect to the network around the house within a limited range.
IEEE 802. 11 a IEEE 802. 11 b IEEE 802. 11 g IEEE 802. 11 n Wireless Fidelity 5 Mbps 11 Mbps 54 Mbps 150 Mbps
More about Wi-Fi Access Point AP Wireless switch
More about Wi-Fi Access Point AP Different types of AP
More about Wi-Fi - Hot. Spot It’s a location installed with AP Coffee Shop
More about Wi-Fi - Hot. Spot It’s a location installed with AP PCCW Wifi
More about Wi-Fi – Gov Wifi Aimed to build Hong Kong Into a wireless City. Both secured & unsecured wifi are available. 100% Free!!
More about Wi-Fi – Gov Wifi Where you can find it? Recreational Facilities
More about Wi-Fi – Gov Wifi Where you can find it? Public Libraries
More about Wi-Fi – Gov Wifi Where you can find it? Sport Venus
More about Wi-Fi – Security Wireless security is very important to protect your data and privacy
More about Wi-Fi – Security Wi-fi Protected Access (WPA 2) Data encrypted using a network key during data transmission.
More about Wi-Fi – Security Unsafe protection method Wired Equivalent Privacy (WEP) Don’t use it!!!
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