5.3 Troubleshoot Location Accuracy 300-430 Practice Questions (Page 7)

Questions 31–33

1. 31foundation · easy

   A location system is producing estimates that are too noisy because it is using very weak RSSI values from distant access points. Which parameter adjustment would most directly address this issue?

   • ADecrease the transmit power of access points
   • BIncrease the dwell time
   • CDecrease the averaging window
   • DIncrease the RSSI threshold to ignore weak signals
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2. 32expert · hard

   A hospital's location system tracks medical equipment. The system reports a distance error of 4 meters with a confidence level of 95%. The clinical staff need to locate equipment within 2 meters to be useful. The APs are well-placed and calibrated. Which approach would best improve the distance error to meet the 2-meter requirement?

   • ARecalibrate the location system using a finer grid of calibration points to improve the spatial resolution of the fingerprint.
   • BIncrease the number of APs that hear the tag by lowering the RSSI threshold, providing more data points for the location calculation.
   • CDisable the confidence calculation to force the system to report a location even when the error is high.
   • DIncrease the dwell time to collect more samples and improve the precision of the location estimate.
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3. 33expert · hard

   A hospital uses location services to track infusion pumps. The location engine reports that the pumps' positions are sometimes reported in a different wing of the hospital, far from their actual location. The distance error metric shows occasional extreme outliers. The RF environment is clean, and AP placement is correct. The hospital has already tried increasing the RSSI threshold and dwell time, but the outliers persist. Which additional step is most likely to identify the root cause?

   • AReplace the infusion pumps with newer models that have better Wi-Fi radios.
   • BEnable client debugging on the pumps to capture association and roaming behavior.
   • CIncrease the transmit power of all APs to ensure the pumps are always associated to the nearest AP.
   • DRecalibrate the entire hospital to ensure the RF model is accurate.
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