Which one of the following file types cannot be imported to Visual RF Plan?

The ability to import files into Visual RF Plan is quite specific, and certain formats are supported while others are not. The correct answer indicates that TIFF files cannot be imported into Visual RF Plan. This is primarily due to the nature of the TIFF format, which is often used for high-quality images and doesn't typically align with the types of files needed for visualization and planning within the software.

Visual RF Plan is designed to handle 2D and 3D mapping and typically prefers bitmap formats that are easier to handle for the kind of analysis and planning it performs, such as PNG and JPG, which are more prevalent for web use and imaging. Additionally, PDF files may also be supported as they can contain vector data and drawings useful for planning, while both PNG and JPG formats are efficient for images used in site planning and design processes.

Understanding these distinctions helps in selecting the appropriate file types when preparing plans and layouts in visual RF applications.