What best describes ensuring coverage requirements in a deployed WLAN?

Coverage must be validated from the perspective of the least capable or lowest-spec client device expected in the environment. This ensures that all necessary devices—not just the most capable ones—can associate and operate reliably.

From CWDP-305:

“Validating coverage should focus on the least capable client device since it will typically have the weakest radio and lowest sensitivity. This ensures all users can connect and meet performance requirements.”

— Reference: CWDP-305 Official Study Guide, Post-Design Validation Chapter