- 34 -
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.
6. What is BSS ID？
A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be configured
with the same BSS ID.
7. What is WEP？
WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40 bit shared key algorithm,
as described in the IEEE 802 .11 standard.
8. What is TKIP?
TKIP is a quick-fix method to quickly overcome the inherent weaknesses in WEP security, especially
the reuse of encryption keys. TKIP is involved in the IEEE 802.11i WLAN security standard, and the
specification might be officially released by early 2003.
9. What is AES?
AES (Advanced Encryption Standard), a chip-based security, has been developed to ensure the
highest degree of security and authenticity for digital information, wherever and however
communicated or stored, while making more efficient use of hardware and/or software than previous
encryption standards. It is also included in IEEE 802.11i standard. Compare with AES, TKIP is a
temporary protocol for replacing WEP security until manufacturers implement AES at the hardware
level.
10. Can Wireless products support printer sharing?
Wireless products perform the same function as LAN products. Therefore, Wireless products can
work with Netware, Windows 2000, or other LAN operating systems to support printer or file sharing.
11. Would the information be intercepted while transmitting on air?
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 series offer the encryption function (WEP) to enhance security and Access Control. Users can
set it up depending upon their needs.
12. What is DSSS？What is FHSS？And what are their differences?
Frequency-hopping spread-spectrum (FHSS) uses a narrowband carrier that changes frequency in a
pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to
maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration
impulse noise. Direct-sequence spread-spectrum (DSSS) generates a redundant bit pattern for each
bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip is, the
greater the probability that the original data can be recovered. Even if one or more bits in the chip are
damaged during transmission, statistical techniques embedded in the radio can recover the original
data without-the need for retransmission. To an unintended receiver, DSSS appears as low power