Which of the following is NOT a user-supplied building specification in Visual RF Plan?

In Visual RF Plan, user-supplied building specifications are critical for accurately modeling the wireless environment within a given space. The focus of the question revolves around identifying which option does not directly relate to user-supplied specifications that assist in the RF planning process.

The correct answer highlights that the number of access points (APs) is not something that the user specifies as a building characteristic. Instead, it's typically determined based on the existing building specifications and the requirements for coverage and capacity in that environment. This decision is often informed by factors such as the building dimensions, the materials present, and the desired user experience.

On the other hand, building height, floor layouts, and wall materials are essential pieces of information that users must supply. These specifications impact how signals propagate through a building, affect coverage areas, and influence how many APs may ultimately be needed. Therefore, options concerning building height, floor layouts, and wall materials directly help to create a realistic and effective wireless network plan, reinforcing the notion that the number of APs is based on analysis rather than direct user input.