CWS Site Survey Fundamentals Flashcards
7 cards from real CWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 CWS Site Survey Fundamentals flashcards as text
In Wi-Fi site surveys, what does the term 'roaming threshold' refer to?
Answer: The RSSI level at which a client device begins scanning for a better AP
The roaming threshold is the signal strength value at which a client starts scanning for a stronger AP, directly affecting seamless handoff between APs.
A surveyor finds significant co-channel interference (CCI) in the 2.4 GHz band. Which is the BEST corrective action?
Answer: Migrate affected devices to 5 GHz or 6 GHz bands with more non-overlapping channels
The 2.4 GHz band offers only 3 non-overlapping 20 MHz channels, so migrating to 5 GHz or 6 GHz—which offer many more non-overlapping channels—is the most effective CCI mitigation.
Which site survey tool feature allows a surveyor to capture and visualize RF signal strength overlaid on a floor plan?
Answer: Heatmap generation
Heatmap generation in site survey software plots measured RSSI values at GPS/floor-plan coordinates, producing a color-coded coverage map.
What is the significance of the 'free path loss' formula during a site survey?
Answer: It estimates how much RF signal attenuates over distance in open space
Free-space path loss (FSPL) quantifies signal attenuation due to distance alone, giving surveyors a baseline before accounting for obstacles.
During a site survey, a surveyor discovers a strong non-Wi-Fi interference source around 2.45 GHz. Which tool would BEST identify this interferer?
Answer: Spectrum analyzer
A spectrum analyzer detects all RF energy in a band—including non-802.11 sources like microwaves or Bluetooth—whereas a Wi-Fi analyzer only sees 802.11 frames.
Why is it important to conduct a site survey using the same client devices that will actually be used in production?
Answer: Different client devices have varying antenna designs, receiver sensitivities, and roaming behaviors
Client device capability varies widely in antenna gain, MIMO chains, and roaming aggressiveness, meaning survey results with one device may not reflect real-world performance with another.
What does EIRP stand for in the context of wireless site surveys?
Answer: Equivalent Isotropically Radiated Power
EIRP (Equivalent Isotropically Radiated Power) is the total power radiated by an antenna system, calculated as transmit power plus antenna gain minus cable losses.