ProSoft Technology ILX34-AENWG - Manual (Page 48)

PSW-PWD ♦ ProSoft Software Glossary of Terms
ProSoft Wireless Designer User Manual
Page 48 of 91
ProSoft Technology, Inc.
July 8, 2009
H
Half-Duplex
A communications circuit or system designed to transmit and receive data, but
not both simultaneously. CB or walkie-talkie radios are an example of a half-
duplex communication system. Either parties on a radio conversation may talk or
listen; but both cannot talk at the same time without corrupting each other's
signal. If one operator is "talking", the other must be "listening" to have
successful communication.
Hz
Hertz. The international unit for measuring frequency equivalent to the older unit
of cycles per second. One megahertz (MHz) is one million hertz. One gigabit
(GHz) is one billion hertz. The standard US electrical power frequency is 60 Hz.
802.11a devices operate in the GHz band; 802.11b and g devices operate in the
2.4 GHz band.
I
IEEE
Institute of Electrical and Electronics Engineers, Inc. IEEE is a professional
organization with members in over 175 countries and is an authority in technical
areas such as computer engineering and telecommunications. IEEE developed
the 802.11 specifications.
IP Address
A 32-bit identification number for each node on an Internet Protocol network.
These addresses are represented as four sets of 8-bit numbers (numbers from 0
to 255), with decimals between them. Networks using the TCP/IP Protocol route
messages based on the IP address of the destination. Each number can be 0 to
255. For example, 192.168.0.100 could be an IP address. Each node on the
network must have a unique IP address.
K
Key
A set of information (often 40 to as much as 256 bits) that is used as a seed to an
encryption algorithm to encrypt (scramble) data. Ideally, the key must also be
known by the receiver to decrypt the data.
L
LAN
A system of connecting PCs and other devices within the same physical
proximity for sharing resources such as internet connections, printers, files, and
drives. When Wi-Fi is used to connect the devices, the system is known as a
wireless LAN or WLAN.