1
BOF
BOF MOD B AND C EXAM REVIEW (NEW 2026
UPDATE) QUESTIONS AND VERIFIED ANSWERS|
GRADE A| 100% CORRECT
Hose clamps are used to? - ANS ✓Replace or extend hose without shutting
down the water supply
Small diameter hose normally com in_________length? - ANS ✓50-100ft length
First arriving engine should? - ANS ✓Intervene between trapped occupants
and fire
Vehicle attack line should be at least? - ANS ✓1 1/2- 1 3/4
A solid stream can best be described as a? - ANS ✓Solid column of water
Nozzle reaction - ANS ✓The force that makes the nozzle move in the opposite
direction of water flow (every action there is an equal and opposite reaction).
Fire stream - ANS ✓Stream of water, or other extinguishing agent, after it leaves
the fire hose and nozzle until it reaches the desired point.
Observable results that are obtained when the proper application of a fire
stream is accomplished? - ANS ✓Fire darkens down
Thermal layer is maintained
Visibility is not decreased
BOF MOD B
, 2
BOF
To prevent BLEVE, direct nozzle stream? - ANS ✓At the point of flame
impingement
Conflagration - ANS ✓Large fire involving multiple structures
Exposure protection - ANS ✓Prevents the spread of fire to areas that are not
already burning or involved
Offensive operations - ANS ✓When firefighters advance hose line into a
building to attack a fire
Directing a fog nozzle up at the ceiling during a fire to create steam is an
example of?
A) Direct attack
B) Indirect attack
C) Defensive attack
D) Offensive attack - ANS ✓B) Indirect attack
A common concept associated with a defensive attack is?
A) Fire too large for hand lines
B) Conditions too dangerous for fire fighters - ANS ✓A) Fire too large for hand
lines
Water is the most popular extinguishing agent because?
A) Low surface tension
B) Polarization
C) Absorbs a large amount of heat - ANS ✓C) Absorbs a large amount of heat
A deck gun is often used on this kind of fire due to its unknown contents?
BOF MOD B
, 3
BOF
A) Car fire
B) Dumpster fire
C) Kitchen fire
D) Warehouse fire - ANS ✓D) Warehouse fire
You can recognize a male coupling by?
A) exposing threads on the shank
B) Swivel on the shank
C) Rocker, lugs and pins - ANS ✓A) Exposed threads on the shank
What is the advantage of a donut roll?
A) Both male and female couplings are available
B) Male coupling is protected
C) Easy to carry - ANS ✓A) Both male and female couplings are available
What type of hose load has the least number of bends?
A) Horseshoe load
B) Minute man load
C) Flat load
D) Triple layer load - ANS ✓A) Horseshoe load
Inspecting a smooth bore nozzle includes?
A) Sanding ball valve
B) Moving parts are clean and move freely - ANS ✓B) Moving parts are clean
and move freely
Inspection of a coupling gasket included looking for?
A) Cracks
BOF MOD B
BOF
BOF MOD B AND C EXAM REVIEW (NEW 2026
UPDATE) QUESTIONS AND VERIFIED ANSWERS|
GRADE A| 100% CORRECT
Hose clamps are used to? - ANS ✓Replace or extend hose without shutting
down the water supply
Small diameter hose normally com in_________length? - ANS ✓50-100ft length
First arriving engine should? - ANS ✓Intervene between trapped occupants
and fire
Vehicle attack line should be at least? - ANS ✓1 1/2- 1 3/4
A solid stream can best be described as a? - ANS ✓Solid column of water
Nozzle reaction - ANS ✓The force that makes the nozzle move in the opposite
direction of water flow (every action there is an equal and opposite reaction).
Fire stream - ANS ✓Stream of water, or other extinguishing agent, after it leaves
the fire hose and nozzle until it reaches the desired point.
Observable results that are obtained when the proper application of a fire
stream is accomplished? - ANS ✓Fire darkens down
Thermal layer is maintained
Visibility is not decreased
BOF MOD B
, 2
BOF
To prevent BLEVE, direct nozzle stream? - ANS ✓At the point of flame
impingement
Conflagration - ANS ✓Large fire involving multiple structures
Exposure protection - ANS ✓Prevents the spread of fire to areas that are not
already burning or involved
Offensive operations - ANS ✓When firefighters advance hose line into a
building to attack a fire
Directing a fog nozzle up at the ceiling during a fire to create steam is an
example of?
A) Direct attack
B) Indirect attack
C) Defensive attack
D) Offensive attack - ANS ✓B) Indirect attack
A common concept associated with a defensive attack is?
A) Fire too large for hand lines
B) Conditions too dangerous for fire fighters - ANS ✓A) Fire too large for hand
lines
Water is the most popular extinguishing agent because?
A) Low surface tension
B) Polarization
C) Absorbs a large amount of heat - ANS ✓C) Absorbs a large amount of heat
A deck gun is often used on this kind of fire due to its unknown contents?
BOF MOD B
, 3
BOF
A) Car fire
B) Dumpster fire
C) Kitchen fire
D) Warehouse fire - ANS ✓D) Warehouse fire
You can recognize a male coupling by?
A) exposing threads on the shank
B) Swivel on the shank
C) Rocker, lugs and pins - ANS ✓A) Exposed threads on the shank
What is the advantage of a donut roll?
A) Both male and female couplings are available
B) Male coupling is protected
C) Easy to carry - ANS ✓A) Both male and female couplings are available
What type of hose load has the least number of bends?
A) Horseshoe load
B) Minute man load
C) Flat load
D) Triple layer load - ANS ✓A) Horseshoe load
Inspecting a smooth bore nozzle includes?
A) Sanding ball valve
B) Moving parts are clean and move freely - ANS ✓B) Moving parts are clean
and move freely
Inspection of a coupling gasket included looking for?
A) Cracks
BOF MOD B
