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Quiz Session - Attempts With Random Questions

Firefighter I II Exam Questions

Page 9 of 50

161.

Firefighters wearing PPE at a hazardous materials incident should be monitored prior to entering the hot zone, immediately after leaving the hot zone, and as otherwise directed by the authority having jurisdiction. It is important that this medical monitoring be part of an exposure record for anyone who has worked in proximity to the hazard or may be exposed. Exposure records are legal records and should include all but which of the following?

  • The location of the exposure

  • Description of the PPE worn

  • Type of decontamination used 

  • Length of exposure

Correct answer: The location of the exposure

The location of the exposure is not part of the exposure record but is a part of the response record.

The information that is part of the exposure record includes:

  • Type of exposure
  • Length of exposure
  • Description of PPE
  • Type of decontamination and products used
  • On scene and follow-up medical attention

162.

Laid rope is commonly used for utility purposes. Which of the following best describes the construction of laid rope?

  • Rope constructed by twisting fibers together to form strands, which are then twisted together to form the final rope

  • Rope that has a core made of load-bearing strands surrounded by a protective outer sheath

  • Rope with strands uniformly woven or braided together

  • Rope that has a core of intertwined strands covered by a herringbone-patterned sheath

Correct answer: Rope constructed by twisting fibers together to form strands and then twisting the strands together to make the final rope

Laid rope is created by twisting fibers into strands, then twisting those strands together in the opposite direction to form the final rope. This type of rope is often used for utility purposes and can be made from natural or synthetic fibers. However, laid rope tends to be more prone to abrasion and has lower resistance to wear compared to other types of ropes.

Kernmantle rope consists of load-bearing strands in the core, protected by an outer sheath, which gives it higher abrasion resistance and is often used for life safety applications. Braided rope has strands that are uniformly intertwined or braided, offering more flexibility and strength than laid rope. Braid-on-braid rope has both a core and sheath made from intertwined strands, often with a herringbone pattern, and is typically stronger than laid rope. 

163.

What personnel is the warm zone limited to?

  • Warm zone personnel are limited to those operating hydraulic tool power plants and providing emergency lighting and fire protection

  • Warm zone personnel are limited to those directly involved in disposing of the problem

  • Warm zone personnel includes Incident Command Post (ICP), locations of Rapid Intervention Crews (RICs), location of the Public Information Officer (PIO), rehabilitation area, and staging areas for personnel and portable equipment

  • Warm zone personnel includes incident commander and all operations crews

Correct answer: Warm zone personnel are limited to those operating hydraulic tool power plants and providing emergency lighting and fire protection

The personnel in the warm zone are limited to those operating hydraulic tool power plants and providing emergency lighting and fire protection.

164.

What is the purpose of the pawls, or dogs, on an extension ladder?

  • To hold the fly section in place after it has been extended

  • To hoist or lower the fly section

  • To secure the ladder to the highest point on a peaked roof of a building

  • To release the fly section after ladder use

Correct answer: To hold the fly section in place after it has been extended 

Pawls, or dogs, are locking mechanisms on an extension ladder that engage to hold the fly section securely in place once extended. This ensures stability and safety while the ladder is in use, preventing unintended movement of the fly section.

Pawls are not used to hoist or lower the fly section; this is done with the halyard, which raises and lowers the fly. Pawls do not secure the ladder to a roof, as roof hooks or other stabilizing devices perform this function. 

Pawls do not release the fly section after use; instead, disengaging them allows the fly section to be lowered, typically done manually or using the halyard.

165.

You are ordered to perform tactical venting of a house with a pitched roof that is actively burning. How should ventilation access be established?

  • Cut a few inches below the peak on the downwind side

  • Cut a 2-foot square within one rafter space, located halfway up the roof

  • Cut a 3-foot narrow channel cut across a rafter at the bottom of the roof

  • Cut a 2-foot by 3-foot square in the gable below the roof line

Correct answer: Cut a few inches below the peak on the downwind side

To cut a tactical vent in the roof of a burning structure that will effectively help ventilate the building, the shingles and any protective material on the roof must be removed before cutting the plywood underneath. Then, an appropriately sized hole for the fire size should be cut in the roof as close to the ridge of the roof as possible. This location allows hot gases and smoke to escape efficiently while reducing the chance of the fire spreading across the roof. Venting on the downwind side also helps control the fire spread by keeping smoke and heat flowing away from firefighters.

It is not appropriate to cut a 2-foot square halfway up the roof when attempting tactical ventilation procedures on a burning structure with a pitched roof. It is never appropriate to attempt to vent a structure on fire by cutting a 3-foot access in the bottom area of the roof. It would not be large enough or in the correct location to draw cool fresh air in and allow smoke and heat to escape. Tactical ventilation of a pitched roof calls for cutting a 4-foot square at the highest point of the roof near the ridge. It is never appropriate to cut into the gable end of the attic to access a high ridge vent.

166.

You are on the scene of a structure fire with a higher than normal oxygen level within the structure. What burning characteristics would you expect to see?

  • Material burning more intensely and may ignite more readily

  • Material burning slower without visible flames due to heavy smoke

  • Flames and heat will be located lower in the structure

  • Flames and smoke will react violently when water is sprayed on material in the area

Correct answer: Material burning more intensely and may ignite more readily

When the oxygen concentration is higher than normal, materials exhibit very different burning characteristics. Materials that burn at normal oxygen levels will burn more intensely and may ignite more readily in oxygen-enriched environments. Some petroleum-based products will auto-ignite in oxygen-enriched environments.

For materials within the structure to burn slowly with heavy smoke and a decrease in visible flames, the oxygen level within the structure is most likely lower than normal. If the oxygen level was higher than normal, it would likely cause significant raging flames and heat. If the oxygen level in the structure were higher than normal, you wouldn't expect to see flames and heat lower in the structure, but raging intense flames and heat. If the oxygen level is increased, it is more likely to see a violent reaction including increased raging flames and heat. It doesn't react violently when water is sprayed on it like some petroleum products would.

167.

What two types of tactical ventilation are generally used?

  • Horizontal and vertical

  • Natural and mechanical

  • Hydraulic and mechanical

  • Windward and leeward

Correct answer: Horizontal and vertical

The two primary types of tactical ventilation are horizontal and vertical. Horizontal ventilation moves smoke, heat, and gases out through windows, doors, or other openings at the same level as the fire. Vertical ventilation releases these products through roof openings or other high points in the structure, allowing heat and smoke to rise and exit vertically. Both methods help improve visibility, reduce fire spread, and create better conditions for search and rescue operations.

Natural and mechanical refer to methods used to achieve ventilation. Natural ventilation uses wind and convection, while mechanical ventilation involves fans or other powered equipment. These methods can apply to both horizontal and vertical ventilation.

Hydraulic ventilation uses water streams to move smoke and heat out of an opening but is not a type of tactical ventilation. Windward and leeward refer to the sides of a structure based on wind direction, not types of ventilation.

168.

It was determined that an overloaded circuit caused the structural fire. What type of fire would this be considered?

  • Accidental

  • Natural

  • Incendiary

  • Undetermined

Correct answer: Accidental

A fire caused by an overloaded circuit is considered an accidental fire. Accidental fires are those that are not deliberate and can result from unsafe human behavior or unsafe conditions.

Natural fires are those that result without human involvement, such as lightning strikes, earthquakes, or tornados. Incendiary fires are set when the individual knows what he/she is doing and can result in a criminal charge of arson. Undetermined fires' cause cannot be determined with a reasonable degree of probability due to a lack of evidence.

169.

There are several ways a firefighting foam extinguishes or prevents ignition. Which method reduces water’s surface tension and allows it to diffuse class A fires?

  • Penetration

  • Smothering

  • Cooling

  • Separating

Correct answer: Penetration

Penetrating is the firefighting foam method that reduces water’s surface tension and allows it to diffuse class A fires.

Smothering is the firefighting foam method that prevents air from reaching the fuel and releasing flammable vapors. Cooling is the firefighting foam method that lowers the fuel’s temperature. Separating is the firefighting foam method that creates a barrier between the fire and the fuel.

170.

The rate and direction of ground cover fire spread are affected by many weather conditions except which of the following?

  • Sun direction

  • Wind direction

  • Temperature

  • Relative humidity

Correct answer: Sun direction

 Sun direction does not directly influence the rate or direction of ground cover fire spread. While sunlight can impact fuel dryness over time, its immediate position or direction has no significant impact on the fire's behavior.

Wind direction strongly influences fire spread, as wind can push flames and embers into new areas, accelerating the fire's movement. Temperature affects the volatility of fuels, as higher temperatures can make vegetation more prone to ignition. Relative humidity plays a crucial role in fire behavior: lower humidity levels dry out fuels, making them more flammable, while higher humidity slows fire spread by increasing fuel moisture.

171.

Large quantities of water can be removed from structures using all except which of the following actions?

  • Opening windows

  • Removing toilet fixtures

  • Creating scuppers

  • Creating chutes with salvage covers

Correct answer: Opening windows

Large quantities of water cannot generally be removed by opening windows, as window openings are generally too high for the water to easily escape.

Large quantities of water can be removed from structures by removing toilet fixtures, creating chutes with salvage covers, or creating scuppers. Firefighters can also locate and clean clogged drains and make use of existing sanitary piping systems to remove large quantities of water from structures.

172.

The flanks of a typical ground cover fire represent which of the following? 

  • The portion on the sides of the ground cover fire parallel to the main direction of the fire

  • The portions of the ground cover fire that extend outward from the main fire

  • The portion of the ground cover fire that burns slowly and with low intensity

  • The portion of the ground cover fire that burns intensely and does the most damage

Correct answer: The portion on the sides of the ground cover fire parallel to the main direction of the fire

The flanks of a ground cover fire are the side portions of the fire, which run parallel to the main direction of the fire spread. These areas are not the most intense parts of the fire but can become more dangerous if wind conditions shift, potentially turning a flank into the head of the fire.

Fingers refer to extensions from the main body of the fire, which can spread irregularly. The heel is the rear part of the fire, typically burning with lower intensity, as it is upwind and moving against the prevailing direction. The head is the leading edge of the fire, which burns with the greatest intensity and causes the most destruction.

173.

The use of foam proportioning equipment can be applied to both mobile and stationary or fixed applications. Which of the following is not a factor in selecting a foam proportioned for a specific application?

  • Ambient water temperature

  • Flow requirements

  • Water pressure

  • Foam agent to be used

Correct answer: Ambient water temperature

Ambient water temperature has no effect on the selection of proportioning equipment for either a mobile or fixed installation.

Flow requirements, water pressure, and the agent used are all factors that influence the decision on which foam proportioned is most applicable to either a mobile or stationary installation.

174.

During a vehicle extrication, which of the following should a firefighter avoid touching, cutting, or opening?

  • Any electrical cables insulated or marked with an orange, blue, yellow, or other brightly colored coating

  • Any electrical cables insulated or marked with a black or grey coating

  • Deployed side curtain airbags

  • Any cables connected directly to the battery of the vehicle

Correct answer: Any electrical cables insulated or marked with an orange, blue, yellow, or other brightly colored coating

Never touch, cut, or open any orange, blue, yellow, or other brightly colored electrical cables while working around a vehicle involved in any accident causing impact, regardless of vehicle damage. Orange cables can contain high-voltage charges even after the battery has been disconnected that can cause serious injury and death in the right condition. Blue cables may contain enough stored electrical charge to hold a moderate charge capable of causing injury.

It is not considered unsafe to touch, cut, or open electrical cables coated or marked in black or grey while working around a vehicle involved in an accident. It is not considered unsafe to touch side curtain airbags that have previously deployed. There is no secondary danger involved with deployed side airbags. However, a firefighter should avoid side curtain airbags that haven't deployed. The general rule is to try to stay 12-18 inches away from side curtain airbags when they haven't deployed even though the vehicle was involved in a serious accident. It isn't considered inappropriate to touch, cut, or open wires connecting the battery to the vehicle's electrical system, especially the normally black negative cable. It is appropriate to cut vehicles black negative battery cable in two places to avoid accidental contact.

175.

A rope’s load limit should never be exceeded or subjected to sustained loads for more than how many days? 

  • Two days

  • Five days

  • Ten days

  • Fourteen days

Correct answer: Two days

A rope’s load limit should never be exceeded, and it should not be subjected to sustained loads for more than two days. Prolonged loading can cause the rope to lose strength and possibly fail below its rated load limit due to the stress and wear caused by the sustained load. This is especially true for ropes under dynamic or high-tension loads, which are more prone to fatigue.

Synthetic fiber ropes, like nylon and polyester, tend to handle sustained loads better than natural fiber ropes. However, both types still degrade when overloaded or under constant stress for too long.

Five, ten, and fourteen days are incorrect because ropes should not be exposed to prolonged stress for more than two days. Beyond that time, the risk of failure increases significantly.

176.

What nonthreaded, sexless coupling is often used with fire hoses that have large diameters?

  • Storz coupling

  • Quarter-turn coupling

  • Threaded coupling

  • Forged coupling

Correct answer: Storz coupling

A Storz coupling is a nonthreaded, sexless coupling commonly used with large-diameter fire hoses. Its design allows for quick connections, as there is no need to align male and female ends, making it especially useful in high-pressure situations or emergencies requiring rapid hose deployment.

A quarter-turn coupling is a nonthreaded coupling but is not typically used for large-diameter hoses. It locks by rotating 90 degrees but does not offer the same versatility as the Storz coupling for larger hoses. 

A threaded coupling has male and female ends that screw together, which requires more time and effort compared to a Storz coupling. It is also not sexless.

A forged coupling refers to a method of manufacturing, not a type of coupling used in fire hoses.

177.

Subsurface fuel is a type of ground cover fuel and includes which of the following? 

  • Peat

  • Needles

  • Grass

  • Tree limbs

Correct answer: Peat

Peat is a subsurface fuel, consisting of partially decayed plant material found below the surface. Subsurface fuels like peat are more challenging to extinguish because they can smolder for long periods underground. Other examples of subsurface fuels include roots and buried logs.

Needles are surface fuels, which are found on the ground but not below the surface. Grass is also a surface fuel, primarily influencing fire spread on the ground level. Tree limbs can either be aerial fuels (above 6 feet) or surface fuels (below 6 feet), but they are not subsurface fuels.

178.

Natural fiber ropes should be cleaned using which of the following methods?

  • Wiping or gently brushing the rope

  • Using cool water with a mild detergent

  • Using warm water with no cleaning agents

  • Wiping the rope with a damp sponge or cloth

Correct answer: Wiping or gently brushing the rope

Natural fiber ropes should be cleaned by wiping or gently brushing them. This method effectively removes surface dirt without exposing the fibers to moisture, which can lead to mold, mildew, and eventual deterioration. Excessive water or detergents can cause the fibers to weaken over time, compromising the rope’s structural integrity.

Using cool water with a mild detergent is not recommended for natural fiber ropes because the water can promote mold growth and weaken the fibers.

Using warm water with no cleaning agents still exposes the rope to water, which can lead to mold, mildew, and weakening of the natural fibers.

Wiping the rope with a damp sponge or cloth introduces moisture, which can also cause mold growth and damage to the natural fibers over time.

179.

What type of ladder consists of a base or bed section and one or more fly sections that travel in guides or brackets to permit length adjustment?

  • Extension ladder

  • Single ladder

  • Combination ladder

  • Roof ladder

Correct answer: Extension ladder

An extension ladder consists of a base or bed section and one or more fly sections that move along guides or brackets, allowing firefighters to extend the ladder to the desired height. These ladders are commonly used to reach elevated areas like windows or roofs of multi-story buildings.

A single ladder is a fixed-length ladder with no adjustable sections. A combination ladder is versatile and can be used in multiple configurations, such as an A-frame, single, or extension ladder, depending on the situation. A roof ladder has hooks at the top to secure the ladder to a roof ridge but does not have adjustable sections like an extension ladder.

180.

What is hydraulic ventilation?

  • The use of a fog nozzle and water to push smoke out of an opening in a structure

  • The use of a chainsaw to create a hole in a structure for gas and smoke removal

  • A single cut the width of the saw blade made in a roof to check for fire extension

  • A rectangular exhaust opening cut in a roof

Correct answer: The use of a fog nozzle and water to push smoke out of an opening in a structure

Hydraulic ventilation involves using a fog nozzle to create a water spray that moves smoke and gases out of a structure by directing airflow toward an exit, such as a window or door. This is an effective technique in controlling ventilation after fire suppression, especially in areas without mechanical ventilation.

A chainsaw is typically used for mechanical ventilation, not hydraulic, and is employed to cut openings in the structure to release heat, smoke, and gases.

A single cut in the roof to check for fire extension is a technique known as a kerf cut, which is used for inspection, not ventilation.

A rectangular exhaust opening is associated with vertical ventilation, where holes are cut in the roof to allow smoke and hot gases to escape, rather than using water streams to push them out.

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