Which measurement is used from a post wireless survey to depict the cell edge of the access points?

Question

Options

• ASNR
• BNoise
• CRSSI
• DCCI

• B
  7% (2)
• C
  90% (26)
• D
  3% (1)

Explanation

RSSI (Received Signal Strength Indicator) is used in post-wireless surveys to depict the cell edge of access points because it directly measures the power level of the received radio signal at any given location. By mapping RSSI values across a coverage area, network engineers can identify where signal strength drops to a threshold level (typically around -67 to -70 dBm), defining the boundary or "edge" of an AP's usable coverage cell.

Why the distractors are wrong:

• SNR (Signal-to-Noise Ratio) measures the difference between signal and noise levels and is useful for assessing connection quality, but it is not the primary metric for plotting cell edge boundaries.
• Noise refers to background RF interference in the environment and doesn't represent signal coverage or AP boundaries.
• CCI (Co-Channel Interference) relates to interference from other APs broadcasting on the same channel and is not used to define cell edges.

Memory Tip: Think of RSSI = "Range of Signal Strength Indicator" - it literally tells you how far the signal reaches, making it the natural choice for marking where a cell begins and ends on a heat map.

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