TP-Link Technologies Co. Ltd. WN422G Manuale Utente

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TL-WN422G 
High-Gain Wireless USB Adapter User Guide
 
 
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36
Appendix A: Glossary 
IEEE 802.11b  - The IEEE 802.11b standard specifies a wireless networking at 11 Mbps 
using direct-sequence spread-spectrum (DSSS) technology and operating in the 
unlicensed radio spectrum at 2.4GHz, and WEP encryption for security. IEEE 802.11b 
networks are also referred to as Wi-Fi networks. 
IEEE 802.11g  - Specification for wireless networking at 54 Mbps using direct-sequence 
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the 
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 8021b 
devices, and WEP encryption for security. 
Ad-hoc Network - An ad-hoc network is a group of computers, each with a wireless 
adapter, connected as an independent IEEE 802.11 wireless LAN. Ad-hoc wireless 
computers operate on a peer-to-peer basis, communicating directly with each other without 
the use of an access point. Ad-hoc mode is also referred to as an Independent Basic 
Service Set (IBSS) or as peer-to-peer mode, and is useful at a departmental scale or 
SOHO operation. 
Infrastructure Network - An infrastructure network is a group of computers or other 
devices, each with a wireless adapter, connected as an IEEE 802.11 wireless LAN. In 
infrastructure mode, the wireless devices communicate with each other and to a wired 
network by first going through an access point. An infrastructure wireless network 
connected to a wired network is referred to as a Basic Service Set (BSS). A set of two or 
more BSS in a single network is referred to as an Extended Service Set (ESS). 
Infrastructure mode is useful at a corporation scale, or when it is necessary to connect the 
wired and wireless networks. 
SSID - Service Set Identification is a thirty-two character (maximum) alphanumeric key 
identifying a wireless local area network. For the wireless devices in a network to 
communicate with each other, all devices must be configured with the same SSID. This is 
typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in 
the wireless Access Point and to the wireless network name.   
WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64 bit or 128 bit 
or 256 bit shared key algorithm, as described in the IEEE 802.11g standard.   
Wi-Fi - A trade name for the IEEE 802.11b wireless networking standard, given by the 
Wireless Ethernet Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry 
standards group promoting interoperability among IEEE 802.11b devices. 
WLAN  (Wireless  Local  Area  Network)  - A group of computers and associated devices 
communicate with each other wirelessly, which network serving users are limited in a local 
area.