The first question establishes the dealer's philosophy. A knowledgeable dealer's process begins with your situation, not with a product. If the recommendation precedes the questions, the process is reversed, and you are being sold to rather than fitted.
Asks about what you're protecting, its approximate value, your available placement location, your primary concern (fire, burglary, or both), and your floor type, before naming a product.
Points you to their most popular model, asks only about budget, or moves directly to product features without understanding your specific situation first.