Roaming
Dynamic Rate Switching
Jitter
Hidden Node
Antenna shifting
Damage to equipment
Damage to cables
Refraction of signal
Intersymbol
All-band
Wideband
Narrowband
Jitter
Latency
Throughput
Overhead
Concrete is denser than drywall and attenuates the signal faster
Concrete deflects the signal back
Signals cannot pass through concrete
Drywall never affects a signal
Access Point
Client Stations
ESS
Administrator
3 channel
4 channel
5 channel
2 channel
Transmitting at full power
Mismatched power settings
Hidden node
Improper Channel reuse
Physical obstructions and poor WLAN design
Other signals interferring
Mismatched power settings
Low SNR
Too little or too much duplicate cell coverage
Hidden node
Free space path loss
CSMA/CA
Changes in air temperature
Wind
Rain
Fog
Multiple Channel Architecture
Single-Channel Architecture
Four channel Plan
Three Channel Plan
Transmission power
CSMA/CA
Encryption
Antenna gain
Hidden node problem
RF interference
Mismatched Power Settings
Low SNR
Mismatched Power Settings
Low SNR
Adjacent Channel Interference
Wideband Interference
Damage to cables
Damage to equipment
Refraction of signal
Movement of antenna direction
Dynamic Rate Switching
Jitter
Roaming
Co-Channel Interference
Wide Band
Co-Channel
All-Band
Adjacent Channel
Co-Channel Interference
Low SNR
RF Interference
Multipath
5 channel
4 channel
2 channel
3 channel
Install drip loops and coax seals
Install a grid antenna
Install a radome
Install lightning arrestors or copper/fiber transceivers
Install drip loops
Get a radome
Install a grid antenna
Coax seals
Wide Band and All-Band
Narrowband and Wide band
Adjacent Channel and Co-Channel
Adjacent Channel and All-band
Improper design
Misconfiguration
Configuring multiple access points on the same channel
Using the wrong protocol
Wavelength
Free Space Path Loss
Trees
Brick Walls
RF
Wideband
All-Band
Narrowband
Wideband
Narrowband
All-band
Adjacent Channel
Low SNR
Near/Far
Hidden Node
Latency
12
11
4
3
Change in wind direction
Change in air pressure
Change in air temperature at high altitudes
Change in wind speed
Remove any obstacles
Add another access point
Use RTS/CTS to diagnose
Redesign the entire WLAN
Antennas
Devices
Connectors
Cables
Decreased range
Excessive MAC sublayer overhead
Jitter
Increased latency
Too little cell coverage overlap
Too much coverage cell overlap
Free space path loss
Hidden node
23
15
21
20
Wideband
Narrow band
RF
All-band
All-band interference
Narrowband interference
Wideband interference
RF interference
Receive Signal Strength Indicator
Airtime Fairness
Radio Resource Measurement
Duplicate Coverage
Channel Stacking
Zero Hand-off
Channel Blanket
Single Channel Architecture
Quiz Review Timeline (Updated): Apr 7, 2013 +
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