IFSTA CHAPTER 14: FIRE SUPPRESSION
(LATEST 2026/ 2027 UPDATE)
QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS| GRADE A+
1. When performing a direct attack on a structure fire, where should the fire stream be
directed?
A. Into the overhead smoke layer to cool hot gases
B. At the ceiling to create a rain-like effect
C. Directly onto the burning fuel until the fire is extinguished
D. In a circular motion to cover the entire room volume
Answer: C
Conceptual Explanation: A direct attack involves applying water directly onto the burning
fuel until the fire is extinguished or knocked down.
2. Which method of fire attack is most effective when the fire is ventilation-limited and the
heat release rate is increasing?
A. Indirect attack
B. Transitional attack
C. Defensive attack
,D. Sustained interior attack
Answer: B
Conceptual Explanation: A transitional attack involves applying water from the exterior
into the fire compartment to cool the environment before entering.
3. What is the primary danger associated with an indirect attack performed in an occupied
building?
A. Failure of the nozzle due to high heat exposure
B. Increased risk of structural collapse due to water weight
C. Excessive water damage to non-involved areas
D. Displacement of the thermal layer and potential steam burns to victims
Answer: D
Conceptual Explanation: Indirect attacks convert water to steam rapidly, which can
displace the thermal layer and severely burn anyone inside the space.
4. A ‘combination attack’ involves which two specific actions?
A. Cooling the hot gas layer and directing water at the fuel
B. Ventilation and search
C. Using two different hose line sizes simultaneously
D. Applying foam and water at the same time
, Answer: A
Conceptual Explanation: A combination attack combines cooling the hot gas layer
(ceiling) with direct attack on the burning fuel.
5. When suppressing a fire in a Class C electrical environment, what is the first priority?
A. Applying a fog stream to dissipate heat
B. Using a CO2 extinguisher immediately
C. De-energizing the electrical equipment
D. Coating the wires with Class A foam
Answer: C
Conceptual Explanation: The first priority for Class C fires is to shut off the power to
eliminate the electrical hazard and treat the fire as Class A or B.
6. What type of nozzle is generally preferred for a transitional attack to avoid air entrainment
into the structure?
A. Smooth bore or straight stream
B. Master stream monitor
C. Wide-angle fog nozzle
D. Cellar nozzle
Answer: A
(LATEST 2026/ 2027 UPDATE)
QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS| GRADE A+
1. When performing a direct attack on a structure fire, where should the fire stream be
directed?
A. Into the overhead smoke layer to cool hot gases
B. At the ceiling to create a rain-like effect
C. Directly onto the burning fuel until the fire is extinguished
D. In a circular motion to cover the entire room volume
Answer: C
Conceptual Explanation: A direct attack involves applying water directly onto the burning
fuel until the fire is extinguished or knocked down.
2. Which method of fire attack is most effective when the fire is ventilation-limited and the
heat release rate is increasing?
A. Indirect attack
B. Transitional attack
C. Defensive attack
,D. Sustained interior attack
Answer: B
Conceptual Explanation: A transitional attack involves applying water from the exterior
into the fire compartment to cool the environment before entering.
3. What is the primary danger associated with an indirect attack performed in an occupied
building?
A. Failure of the nozzle due to high heat exposure
B. Increased risk of structural collapse due to water weight
C. Excessive water damage to non-involved areas
D. Displacement of the thermal layer and potential steam burns to victims
Answer: D
Conceptual Explanation: Indirect attacks convert water to steam rapidly, which can
displace the thermal layer and severely burn anyone inside the space.
4. A ‘combination attack’ involves which two specific actions?
A. Cooling the hot gas layer and directing water at the fuel
B. Ventilation and search
C. Using two different hose line sizes simultaneously
D. Applying foam and water at the same time
, Answer: A
Conceptual Explanation: A combination attack combines cooling the hot gas layer
(ceiling) with direct attack on the burning fuel.
5. When suppressing a fire in a Class C electrical environment, what is the first priority?
A. Applying a fog stream to dissipate heat
B. Using a CO2 extinguisher immediately
C. De-energizing the electrical equipment
D. Coating the wires with Class A foam
Answer: C
Conceptual Explanation: The first priority for Class C fires is to shut off the power to
eliminate the electrical hazard and treat the fire as Class A or B.
6. What type of nozzle is generally preferred for a transitional attack to avoid air entrainment
into the structure?
A. Smooth bore or straight stream
B. Master stream monitor
C. Wide-angle fog nozzle
D. Cellar nozzle
Answer: A
