Comprehensive and Detailed Explanation:
Including 5.5 and 11 Mbps as basic rates in a mixed 802.11b/g/n network necessitates the use of protection mechanisms, such as RTS/CTS or CTS-to-self, to prevent collisions between legacy 802.11b devices and newer 802.11g/n devices. These mechanisms introduce additional overhead, potentially reducing overall network throughput. Therefore, configuring 5.5 and 11 Mbps as basic rates will result in the constant use of protection mechanisms to maintain compatibility with 802.11b clients.
Reference: CWDP-305 Official Study Guide, Chapter on Infrastructure Design

The Bill of Materials (BoM) is a comprehensive list detailing all hardware components, devices, and materials required for the deployment of a WLAN infrastructure. It serves as a reference for procurement and ensures that all necessary items are accounted for before the deployment begins. Unlike the Statement of Work, which outlines the scope and objectives, or the design report, which provides technical specifications, the BoM focuses specifically on the tangible components needed for implementation.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

Real-Time Location Systems (RTLS) require precise triangulation, which can only occur if a device is detected by at least three APs with strong RSSI values from various angles. The best accuracy is achieved by placing APs around the perimeter and within the area so devices are surrounded.
From CWDP-305:
"For accurate Wi-Fi location tracking, ensure that client devices can be detected by a minimum of three, preferably four, APs with good signal strength. APs should be placed around the perimeter and within the location zone for proper triangulation."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications