A consultant must design a WLAN for a large campus with high AP density, 50-100...

Designing for 50-100 clients per cell with 5 Mbps minimum throughput and no 802.11b clients requires two critical optimizations. First, setting minimum mandatory data rates to 12-18 Mbps (Option A) removes legacy lower data rates from the AP ' s supported rate set. When 1, 2, 5.5, and 11 Mbps rates are disabled and 12 Mbps becomes the minimum mandatory rate, legacy 802.11b clients are excluded from the cell, airtime efficiency improves dramatically, and clients connecting at higher rates use less channel time per frame, increasing effective capacity. Second, Flexible Radio Assignment (FRA) for 2.4 GHz reduction (Option D) is critical in high-density environments. FRA allows the WLC to dynamically reassign some 2.4 GHz radios to 5 GHz operation or monitor mode, reducing 2.4 GHz cell size and interference while increasing 5 GHz capacity in the high-density area. Option C directly contradicts the no-802.11b requirement. Option B (6 SSIDs per AP) is a management consideration but does not directly address throughput. Option E (80-160 MHz channels) would consume available spectrum, reducing the number of usable non-overlapping channels and worsening co-channel interference at high density. Reference: WLSD Study Guide — High-Density WLAN Design, Minimum Data Rate Configuration, Flexible Radio Assignment (FRA).