Atlantis Land A02-RA141-W54 - Manual (Page 93)

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A02-RA141-W54 Pag. 84
data without the need for retransmission. To an unintended
receiver, DSSS appears as low power wideband noise and is
rejected (ignored) by most narrowband receivers.
Question Would the information be intercepted while transmitting on
air?
Answer WLAN features two-fold protection in security. On the
hardware side, as with Direct Sequence Spread Spectrum
technology, it has the inherent security feature of scrambling.
On the software side, WLAN offers the encryption function
(WEP) to enhance security and access control.
Question What is WEP?
Answer WEP is Wired Equivalent Privacy, a data privacy mechanism
based on a 64-bit or 128-bit shared key algorithm, as
described in the IEEE 802.11 standard.
Question What is infrastructure mode?
Answer When a wireless network is set to infrastructure mode, the
wireless network is configured to communicate with a wired
network through a wireless access point.
Question What is roaming?
Answer Roaming is the ability of a portable computer user to
communicate continuously while moving freely throughout an
area greater than that covered by a single access point.
Before using the roaming function, the workstation must make
sure that it is the same channel number with the access point
of dedicated coverage area.
Question What is ISM band?
Answer 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.