Registered Communications Distribution Designer (RCDD-001) — Question 9

What type of material does NOT support combustion even under accelerated conditions?

Answer options

• A. Fire break
• B. Fire proof
• C. Fire resistant
• D. Fire retardant

Correct answer: B

Explanation

The correct answer is B, as 'Fire proof' materials are designed to be completely non-combustible, making them safe under any conditions. In contrast, 'Fire break' (A), 'Fire resistant' (C), and 'Fire retardant' (D) materials may slow down combustion or resist it to some extent, but they can still ignite or burn under certain conditions.