COMPREHENSIVE EXAMINATION TEST
2026 QUESTIONS AND SOLUTIONS
GRADED A+
◉ What can happen if excess steam is produced inside the structure
as a result of applying water on the fire? (670) [4.3.10]
Disruption of the thermal layering
Increase in the potential for backdraft or flashover
Transition from fuel-limited to ventilation-limited conditions
Pyrolysis process speeds up .
Answer: Disruption of the thermal layering
◉ In which situation would fuel removal be a likely method of
extinguishment? (670) [4.3.19]
Fire in an apartment building
Fire in a one-story house
Grass fire
Warehouse fire .
Answer: Grass fire
,◉ Closing the valve on a natural gas tank to stop the emission of
gaseous fuel would be an example of: (670) [4.310]
fuel removal.
oxygen exclusion.
chemical flame inhibition.
temperature reduction.
Answer: fuel removal.
◉ When a firefighter controls doors and windows during fire attack,
it is an example of: (671) [4.310, 4.3.11]
chemical flame inhibition.
temperature reduction.
fuel removal.
oxygen exclusion.
Answer: oxygen exclusion.
◉ Clean agents extinguish fire by: (672) [4.3.10]
removing oxygen from the compartment.
removing the burning fuel.
cooling the burning material.
Interrupting the combustion reaction.
, Answer: Interrupting the combustion reaction.
◉ If you are positioned to make fire attack, which condition would
be important to communicate to your supervisor or the Incident
Commander? (673) [4.3.10]
Smoke that changes from gray to black
All team members' PASS devices are functioning
Amount of radiant heat felt by firefighters
Presence of bystanders at the perimeter
Answer: Smoke that changes from gray to black
◉ Firefighters should ensure that PASS devices are on and operating
properly: (673) [4.3.10]
before entering the structure.
once they reach the seat of the fire.
before applying water to the fire.
once they reach their "point of no return."
Answer: before entering the structure.
◉ Which tool or piece of equipment is a member of a fire attack
team likely to carry? (674) [4.3.10]
Salvage cover
ppv fan