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802.11g WLAN USB Adapter
E
Encryption - A security method that applies a specific algorithm to data in order to alter the
data's appearance and prevent other devices from reading the information.
Ethernet - The most widely used LAN access method, which is defined by the IEEE 802.3
standard. Ethernet is normally a shared media LAN meaning all devices on the network
segment share total bandwidth. Ethernet networks operate at 10Mbp using CSMA/CD to run
over 10Base T cables.
F
Firmware - Program that is inserted into programmable read-only memory (programmable
read-only memory), thus becoming a permanent part of a computing device.
Fragmentation Threshold Value - Indicates how much of the network resources is devoted
to recovering packet errors. The value should remain at its default setting of 2,432. If you
experience high packet error rates, you can decrease this value but it will likely decrease
overall network performance. Only minor modifications of this value are recommended.
Fragmentation - Breaking a packet into smaller units when transmitting over a network
medium that cannot support the original size of the packet.
I
IEEE - The Institute of Electrical and Electronics Engineers
IEEE 802.11b standard - The IEEE 802.11b Wireless LAN standards subcommittee
formulating standards for the industry. The objective is to enable wireless LAN hardware
from different manufacturers to communicate.
Infrastructure Mode - A client setting providing connectivity to an Access Point. As
compared to Ad-Hoc Mode where PCs communicate directly with each other clients set in
infrastructure Mode all pass data through a central Access Point. The Access Point not only
mediates Wireless network traffic in the immediate neighborhood but also pro-vides
communication with the wired network. An integrated wireless and wireless and wired LAN
is called an Infrastructure configuration. Infrastructure is applicable to enterprise scale for
wireless access to central database, or wireless application for mobile workers.
IP Address - An IP address is a 32-bit number that identifies each sender & receiver of
information that is sent across the Internet. An IP address has two parts: the identifier of a
particular network on the Internet and one identifier of a particular device (which can be a
server or a workstation within that network).
ISM band - The FCC and their counterparts outside of the U.S. have set aside bandwidth
for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the
vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly
revolutionary opportunity to place convenient high-speed wireless capabilities in the hands
of users around the globe.
L
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