List two passive fire protection systems for buildings.

• A. Fire rated walls and special coatings on structural components
• B. Automatic sprinkler systems and fire alarms
• C. Fire alarms and smoke detectors
• D. Automatic sprinklers and extinguishers

Answer: (A)

The idea being tested is how passive fire protection works: protection that doesn’t rely on alarms, detectors, or water flow to function. Fire-rated walls and protective coatings on structural components are classic examples. Fire-rated walls create compartments that slow or stop the spread of fire and help protect escape routes and the building’s structure. Protective coatings, such as intumescent or cementitious coverings on steel or other structural members, help maintain strength and stability when exposed to high temperatures, buying time during a fire. These measures operate automatically, without energy, detection, or activation requirements, which is what makes them passive.

In contrast, options that include automatic sprinklers, extinguishers, alarms, and smoke detectors involve action triggered by detection or manual use, so they fall under active fire protection or detection systems rather than passive.