Match each observed wireless network performance symptom to its corresponding Radio Frequency (RF) root cause or signal behavior.
- Elevated frame retry rates and low throughput despite a high Received Signal Strength Indicator (RSSI) near overlapping 2.4 GHz access points.Adjacent Channel Interference (ACI)
- A severe drop in signal level (RSSI) immediately after passing through walls containing dense metallic shielding.Material Attenuation
- Corrupted frames and intermittent throughput drops caused by RF signals reflecting off hard surfaces and arriving at the receiver at slightly different times.Multipath Interference
- A mobile handheld scanner maintaining a connection to a distant access point with poor signal strength instead of switching to an adjacent access point with a stronger signal.Sticky Client Behavior
Answer
1. High retry rate with strong RSSI maps to Adjacent Channel Interference (ACI). 2. Signal strength drop behind dense walls maps to Material Attenuation. 3. Reflected signals causing phase issues maps to Multipath Interference. 4. Mobile device failing to switch access points maps to Sticky Client Behavior.
Each symptom directly corresponds to a specific wireless RF issue: Adjacent Channel Interference causes high retransmissions under strong signal conditions due to channel overlap; Material Attenuation reduces signal strength across physical barriers; Multipath Interference results from RF signal reflections arriving out of phase; and Sticky Client Behavior occurs when client devices fail to roam to a closer access point.
Step-by-Step Solution
Key Concept
Wireless Radio Frequency (RF) Signal Degradation and Roaming Issues