You are designing WLAN coverage for a corporate office building. For each scenario below, decide whether it requires Visual LOS or RF LOS to be considered. 1: Two wireless bridges are mounted on rooftops. The antennas must be clearly visible to each other. ____ 2: A pair of access points installed in warehouses must consider earth curvature for long-distance connectivity. ____ 3: A wireless link is planned across a valley. Even though devices cannot “see” each other visually due to terrain, calculations show Fresnel Zone is 70% clear. ____ 4: A point-to-point wireless link across a campus requires keeping at least 60% of the Fresnel Zone clear of trees and obstacles. ____ 5: A technician checks that no tall buildings are blocking the straight view between transmitter and receiver. ____