Wireless Flashcards
Wireless
Bridges 802.11 and Ethernet networks
Wireless Access Point (WAP)
Wireless
Infrastructure and ad hoc are the
Two modes of 802.11
Wireless
5GHz - band
54Mbps
ALPHA
802.11a
Wireless
2.4GHz - band
11 Mbps
BRAVO
802.11b
Wireless
2.4GHz - band
54Mbps
GOLF
802.11g
Wireless
2.4GHz / 5GHz - band
100 Mbps
November
802.11n
Wireless
2.4 GHz and 5 GHz ISM bands are used by
802.11
Wireless
802.11 uses
pre-made channels
Wireless
Shows available channels in an ISM band
Site Survey
Wireless
This must be created
Service Set Identifier (SSID)
Wireless
Multiple SSIDs are supported by mos
WAPs
Wireless
SSID broadcasts can be
Hidden
Wireless
Extensions are definable to support
Channels
–and–
Channel Width
Wireless
Issues with Connecting to an SSID
1 NIC is configured as DHCP client
Wireless
Issues with Connecting to an SSID
Passwords can change
Wireless
Issues with Connecting to an SSID
Set wireless NIC to a static IP address
Wireless
Wireless clients scan the 802.11 spectrum
to find available SSIDs
Wireless
You must know the SSID and password to
Connect
Wireless
Create profiles that store the SSIDs and their passwords
Clients
Wireless
Great wireless solution for SOHO environments
Mesh Networks
Wireless
Mesh networks have a base station and beacon devices that connect to the
Base Station
Wireless
Mesh networks use their own
Encryption
Wireless
Mesh networks are universally
Easy to configure
Wireless
Bluetooth Class 1
DiSS/DiSS
100 mW / 100m
Wireless
Bluetooth Class 2
aNaL/ToeS
2.5 mW / 10m
Wireless
Bluetooth Class 3
T / T
1 mW/ 1m
Wireless
Uses tiny radios activated by the energy of scanning devices
Triffid
RFID
Wireless
Requires extremely close proximity to function
NoFaCe
NFC
Wireless
Like 802.11 but pairs with devices to function as point-to-point
Bluetooth
Wireless
use a wifi-analyzer
when having wi-fi problems
Wireless
No connectivity
SSID - does not exist
or pw has changed
Wireless
Low freq signal
If too low you wont have connectivity
Get closer to SSID
Look at antennas -
The position may be cause of signal problems
Wireless
Limited connectivity
Slow transfer speed - figure out where
Wireless
Low RF speed
You can be connected but. - get closer ….
Wireless
Intermittent connectivity
Good or bad
Low RF signals -
too many people
Put in QOS
Wireless
Helpful to diagnose wireless problems
Wi-Fi analyzers
Wireless - Quiz
A switch is a
Hard wired device
Wireless - Quiz
Runs on 5GHz
Alpha
802.11a
Wireless - Quiz
Which should you try first if your device can’t connect to a remembered public wireless network?
Delete the profile and try to make a new connection.
Wireless - Quiz
Mesh networks have
single base station
Wireless - Quiz
Don’t provide the customized configuration required for enterprise-size networks.
DO NOT
Wireless - Quiz
Rarely used wireless technology
Infrared
Wireless - Quiz
Which is most-likely to prevent a device from connecting to a previously-used WiFi network
The SSID has changed
