schemes found in 802.11b including CCK for 11 and 5.5 Mbps and Barker code
modulation for 2 and 1 M bp s.
B. A pro tec ti on m echani sm called RTS/CTS that gove rns how 802.11g devices and
802.11b devices inte roperate.
2. What is t he I EEE 802.11b s tandard？
The IEEE 802.11b Wirele ss LAN standard subcommittee, which formulates the
standard for the indu st ry. The objective is to enable wi reless LAN hardware from
different manufactures to communicate.
3. What does IEEE 8 02.11 feat ure support？
The product suppo rts the fol l owing IEEE 802.11 fun ctions:
z CSMA/CA plus Acknowledge Protocol
z Multi-Channel Roaming
z Automatic Rate Selecti on
z RTS/CT S Fea tur e
z Fragmentation
z Power Management
4. What is Ad-hoc？
An Ad-hoc integrated wirel ess LAN is a group of compute rs, each has a Wireless LAN
adapter, Connected as an independ ent wireless LA N. Ad hoc wireless LAN is
applicable at a depar tmental scale for a branch o r SOHO operation.
5. What is Infrastructure？
An integrated wi rele ss and wireless and wired LA N i s called an Infrastructure
configuration. Infra structure i s applicable to enterpri se scale for wireless access to
central database, or wi reless application for mobile workers.
6. What is BSS ID？
A specific Ad hoc LAN i s called a Basic Service S et (BSS). Computers in a BSS m u st
be configured with the same BSS ID.
7. What is WEP？
WEP is Wired Equival ent P rivacy, a data privacy me chani sm based on a 40 bit shared
key algorithm, a s described in the IEEE 802 .11 standard.
8. What is TKIP ?
TKIP is a quic k-fix method to quickly overcome the inhe rent weaknesses in WEP
security, especially the reuse of encryption keys. TKIP i s involved in the IEEE 802.11i
WLAN security standa rd, an d the specification might be of fi cial l y released by early
2003.
9. What is AES?
AES (Advanced Encryption Stan dard), a chip-based securit y, h a s been developed to
ensure the highe st degree of security and authenticity fo r digital information, whereve r
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