What service must be implemented on your customers' network to authenticate users against an LDAP...

[Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications, , What is the best method of gathering attenuation measurements from any building materials or objects?, A. After measuring the RSSI in free space 5 meters (16.5 feet) apart, put an AP 4 meters (13 feet) away from the wall or object on one side and your measuring device 0.67 meters (2 feet) away from the wall or object on the other side. Take measurement and compare the difference.B. Use the pre-built attenuation values in the predictive design tool.C. After measuring the RSSI in free space 1 meter (3 feet) apart, put an AP 0.32 meters (1 feet) away from the wall or object on the other side. Take measurements and compare the difference.D. Look on the Internet for attenuation values for each one of the materials that might attenuate the Wi-Fi signal using the material provider's websites., Answer:A, , The most accurate method to determine the attenuation of specific building materials is to perform empirical measurements.This involves measuring the Received Signal Strength Indicator (RSSI) in free space at a known distance and then measuring the RSSI with the material between the transmitter and receiver.The difference in RSSI values indicates the attenuation caused by the material., The CWDP-305 Official Study and Reference Guide emphasizes the importance of empirical measurements:, "To accurately measure attenuation, perform a free-space measurement at a known distance, then place the material between the transmitter and receiver and measure again. The difference in signal strength represents the material's attenuation.", Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys, , ]