Exam 300-425 topic 1 question 27 discussion

You’ll want to break your coverage area into many small cells (micro-cells) running at lower Tx power. That gives you: -Higher client density by increasing spatial reuse -Better QoS for multimedia through smaller contention domains -Seamless roaming as clients hand off between tightly-spaced APs -Adequate data capacity without overshooting coverage or causing excessive co-channel interference So the correct choice is A: use of micro cells with reduced power levels.

Macro cells with reduced power levels are called micro cells. Micro cells with reduced power levels are called pico cells. So answer is B.

Best solution to support high concentration clients is to use Micro cell to reduce interference. to reach that one option is to reduce the power . more options explained here : https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_cisco_aironet_series_2800_3800_access_point_deployment_guide/b_cisco_aironet_series_2800_3800_access_point_deployment_guide_chapter_01001.pdf

High density area