User's Manual

wireless data communication. It is part of the system security behind the wireless
IEEE 802.11 protocol, and its goals are to provide confidentiality and data integrity,
and to protect access to the network infrastructure by rejecting all non-WEP
packets.
Q: What is an Access Point ?
A: It is a hardware device that converts a wired LAN port/outlet to a wireless port
typically for Infrastructure mode.
Q: What is AdHoc mode ?
A: Peer-to-Peer networking mode usually used for sharing local resources between
wireless Networked PCs.
Q: What is Infrastructure mode ?
A: Infrastructure Mode allows a wireless network to be integrated into an existing,
wired network through an Access Point, permitting roaming between Access Points
while maintaining a connection to all network resources.
Q: What is IEEE 802.11 standard ?
A: It is a standard set by Institution of Electrical Electronics & Engineers for
standardizing the wireless networking hardware so that they are interoperable.
Q: What is ISM band ?
A: 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. The ISM band
comprises of frequencies in the vicinity of 2.4 GHz.
Q: What is Direct-Sequencing Spread Spectrum (DSSS) ?
A: Wireless LAN products are available in three different technologies – Direct
Sequencing Spread Spectrum (DSSS), Frequency Hopping Spread-Spectrum
(FHSS) and Infrared. DSSS and FHSS are spread-spectrum techniques that
operate over the radio airwaves in the unlicensed ISM band (Industrial, Scientific,
and Medical). DSSS uses radio transmitter to spread data packets over a fixed
range of frequency band.
Q: How does the Wireless LAN connect the PCs ?
A: The Wireless LAN uses Radio Frequency (RF) to transmit data. In this respect, it
is similar to radio stations and cordless phones. Devices "tune in" to different
signals on specific frequency bands and ignore others, allowing the devices to co-
exist and PCs to communicate securely over the Wireless LAN.
Q: Will Wireless LAN interfere with other RF devices like cordless phones?