NAFI CFEI Test Questions with 100% Correct
Answers
Origin of the fire
The same as the cause.
Electrical arcing
Evidence of fire origin.
Correct order of evidence handling
Collect, package, label, document.
Fire tetrahedron component
Not including Light.
Backdraft
Occurs when oxygen is introduced into an oxygen-depleted environment.
Bias in fire investigation
Must be avoided by a fire investigator.
First step in the scientific method
Form a hypothesis.
Tool for evaluating circuit integrity
Multimeter.
High-order explosions
, Result in large craters and extensive fragmentation.
V-patterns
Always point to the point of origin.
Chain of custody
Essential for evidence integrity.
Recommended method for fire investigation according to NFPA 921
Scientific method.
Opinions in court
A fire investigator cannot offer opinions outside their area of expertise.
Factors affecting fire pattern appearance
Ventilation, Material type, Suppression efforts, All of the above.
NFPA 921 requirement
Requires fire investigators to be licensed engineers.
Digital photographs
Can be altered and are not admissible in court.
Cause of an explosion
Not typically a cause.
Mechanical failure
Answers
Origin of the fire
The same as the cause.
Electrical arcing
Evidence of fire origin.
Correct order of evidence handling
Collect, package, label, document.
Fire tetrahedron component
Not including Light.
Backdraft
Occurs when oxygen is introduced into an oxygen-depleted environment.
Bias in fire investigation
Must be avoided by a fire investigator.
First step in the scientific method
Form a hypothesis.
Tool for evaluating circuit integrity
Multimeter.
High-order explosions
, Result in large craters and extensive fragmentation.
V-patterns
Always point to the point of origin.
Chain of custody
Essential for evidence integrity.
Recommended method for fire investigation according to NFPA 921
Scientific method.
Opinions in court
A fire investigator cannot offer opinions outside their area of expertise.
Factors affecting fire pattern appearance
Ventilation, Material type, Suppression efforts, All of the above.
NFPA 921 requirement
Requires fire investigators to be licensed engineers.
Digital photographs
Can be altered and are not admissible in court.
Cause of an explosion
Not typically a cause.
Mechanical failure
