Wireless Flashcards
Unlicensed Frequencies
900 Mhz - 902 - 928
2.4 Ghz - 2.400 - 2.483
5 Ghz - 5.150 - 5.350
The lower the frequency the ______ range you get, but the _____ bandwidth
Further range
less bandwidth
802.11b - Frequency?
2.4Ghz Range
802.11A - Frequency?
5.8Ghz Range
802.11b - Max Data Rate?
11Mbps
802.11a - Max Data Rate
54Mbps
802.11b - # of channels
3
1, 6 and 11 clear
802.11b - # of channels
12 to 23
802.11g - Max Data Rate
54Mbps
802.11g - Frequency?
2.4Ghz
802.11g - # of channels
3 clear
1, 6, and 11 clear
802.11n - Max Data Rate
150mbps
802.11n - Frequency?
Both 2.4 and 5
A section of a wireless range?
ex: 2.4 has 3
channels
Goal - Setup access points with non _______ frequencies. If you do overlap - ____ to ___%
overlapping
10 to 15 %
Regulates the readio frequencies used for wireless transmissions
ITU-R : International Telecommunications Union - RadioCommunication Sectior
Maintains the 802.11 Wireless Transmission Standards
IEEE: Insintue of electical and electronic engineers
Ensures Certified interoperability between 802.11 wireless vendors
Wi-Fi Alliance
Simple WLAN with a single AP
Basic Service Set - BSS
WLAN with multiple AP’s
Extended Service Set - ESS
Identifies a WLAN - 32 character ASCII
Service Set Identifier - SSID
Initial Wireless Security
- Static PSK
- only 64 bit keys
Wired Equivalent Privacy - WEP
Cisco Interim OSlution between WEP and 802.11i has the following features
- Dynamic Key Exchange
- User authentication using 802.1x
- new encryption for each packet
