NAFI CFEI Practice Exam Questions 2026
EDITION WITH WELL RESEARCHED ANSWERS
REAL EXAM !!!!
Origin of the fire - ANSWER💫✔️--The same as the cause.
Electrical arcing - ANSWER💫✔️--Evidence of fire origin.
Correct order of evidence handling - ANSWER💫✔️--Collect, package, label, document.
Fire tetrahedron component - ANSWER💫✔️--Not including Light.
Backdraft - ANSWER💫✔️--Occurs when oxygen is introduced into an oxygen-depleted environment.
Bias in fire investigation - ANSWER💫✔️--Must be avoided by a fire investigator.
First step in the scientific method - ANSWER💫✔️--Form a hypothesis.
Tool for evaluating circuit integrity - ANSWER💫✔️--Multimeter.
High-order explosions - ANSWER💫✔️--Result in large craters and extensive fragmentation.
V-patterns - ANSWER💫✔️--Always point to the point of origin.
, Chain of custody - ANSWER💫✔️--Essential for evidence integrity.
Recommended method for fire investigation according to NFPA 921 - ANSWER💫✔️--Scientific method.
Opinions in court - ANSWER💫✔️--A fire investigator cannot offer opinions outside their area of
expertise.
Factors affecting fire pattern appearance - ANSWER💫✔️--Ventilation, Material type, Suppression efforts,
All of the above.
NFPA 921 requirement - ANSWER💫✔️--Requires fire investigators to be licensed engineers.
Digital photographs - ANSWER💫✔️--Can be altered and are not admissible in court.
Cause of an explosion - ANSWER💫✔️--Not typically a cause.
Mechanical failure - ANSWER💫✔️--A failure in machinery that can lead to accidents or incidents.
Dust accumulation - ANSWER💫✔️--The buildup of dust that can contribute to fire hazards.
Electrical short - ANSWER💫✔️--A fault in an electrical circuit that causes a current to flow along an
unintended path.
Radiation leakage - ANSWER💫✔️--The unintended release of radiation from a source.
Multimeter - ANSWER💫✔️--A tool typically used to evaluate circuit integrity.
Bias - ANSWER💫✔️--A tendency to favor one perspective over others, which a fire investigator must
avoid.
EDITION WITH WELL RESEARCHED ANSWERS
REAL EXAM !!!!
Origin of the fire - ANSWER💫✔️--The same as the cause.
Electrical arcing - ANSWER💫✔️--Evidence of fire origin.
Correct order of evidence handling - ANSWER💫✔️--Collect, package, label, document.
Fire tetrahedron component - ANSWER💫✔️--Not including Light.
Backdraft - ANSWER💫✔️--Occurs when oxygen is introduced into an oxygen-depleted environment.
Bias in fire investigation - ANSWER💫✔️--Must be avoided by a fire investigator.
First step in the scientific method - ANSWER💫✔️--Form a hypothesis.
Tool for evaluating circuit integrity - ANSWER💫✔️--Multimeter.
High-order explosions - ANSWER💫✔️--Result in large craters and extensive fragmentation.
V-patterns - ANSWER💫✔️--Always point to the point of origin.
, Chain of custody - ANSWER💫✔️--Essential for evidence integrity.
Recommended method for fire investigation according to NFPA 921 - ANSWER💫✔️--Scientific method.
Opinions in court - ANSWER💫✔️--A fire investigator cannot offer opinions outside their area of
expertise.
Factors affecting fire pattern appearance - ANSWER💫✔️--Ventilation, Material type, Suppression efforts,
All of the above.
NFPA 921 requirement - ANSWER💫✔️--Requires fire investigators to be licensed engineers.
Digital photographs - ANSWER💫✔️--Can be altered and are not admissible in court.
Cause of an explosion - ANSWER💫✔️--Not typically a cause.
Mechanical failure - ANSWER💫✔️--A failure in machinery that can lead to accidents or incidents.
Dust accumulation - ANSWER💫✔️--The buildup of dust that can contribute to fire hazards.
Electrical short - ANSWER💫✔️--A fault in an electrical circuit that causes a current to flow along an
unintended path.
Radiation leakage - ANSWER💫✔️--The unintended release of radiation from a source.
Multimeter - ANSWER💫✔️--A tool typically used to evaluate circuit integrity.
Bias - ANSWER💫✔️--A tendency to favor one perspective over others, which a fire investigator must
avoid.
