問題文
A warehouse deploys 40 access points in a hall. Handheld scanners report slow transfers even though the signal indicator is full everywhere. All access points are configured for the widest channel setting available. What is the likely cause?
選択肢
- The transmit power is too low for the hall, so the scanners hold an association but cannot sustain any of the higher data rates at all.
- The scanners support only an older generation of the standard, so they fall back to a lower rate and consume more airtime per frame, which is why the indicator shows full signal while the measured transfer rate stays low across the hall.
- The access points need more than 40 units for the hall's size, so each scanner is served by a radio that is too far away to be fast.
- The wide channels leave too few non-overlapping choices, so neighboring access points contend for the same airtime.