Public library clients flake near one AP while captures show many Beacons from that AP failing FCS checks. What is the most appropriate conclusion?
Select an answer to reveal the explanation.
Short Explanation
Beacons are the AP's business card—if half of them fail the checksum, the card is smudged by bad RF or a sick radio. Don't blame the sniffer's battery; validate the air and the AP.
Full Explanation
Frame Check Sequence failures on management frames, especially Beacons, mean the receiver could not validate the frame—commonly from RF corruption, interference, or a failing AP transmitter/path. Clients that miss clean Beacons exhibit flaky discovery and holding behavior. Analysts should correlate FCS stats with spectrum/AP health checks rather than dismissing management CRC errors as sniffer artifacts alone.