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NAFI CFEI PRACTICE EXAM
QUESTIONS AND ANSWERS 2026
Origin of the fire -correct Answers -The same as the
cause.
Electrical arcing -correct Answers -Evidence of fire origin.
Correct order of evidence handling -correct Answers -
Collect, package, label, document.
Fire tetrahedron component -correct Answers -Not
including Light.
Backdraft -correct Answers -Occurs when oxygen is
introduced into an oxygen-depleted environment.
Bias in fire investigation -correct Answers -Must be
avoided by a fire investigator.
First step in the scientific method -correct Answers -Form
a hypothesis.
Tool for evaluating circuit integrity -correct Answers -
Multimeter.
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High-order explosions -correct Answers -Result in large
craters and extensive fragmentation.
V-patterns -correct Answers -Always point to the point of
origin.
Chain of custody -correct Answers -Essential for
evidence integrity.
Recommended method for fire investigation according to
NFPA 921 -correct Answers -Scientific method.
Opinions in court -correct Answers -A fire investigator
cannot offer opinions outside their area of expertise.
Factors affecting fire pattern appearance -correct
Answers -Ventilation, Material type, Suppression efforts,
All of the above.
NFPA 921 requirement -correct Answers -Requires fire
investigators to be licensed engineers.
Digital photographs -correct Answers -Can be altered
and are not admissible in court.
Cause of an explosion -correct Answers -Not typically a
cause.
NAFI CFEI PRACTICE EXAM
QUESTIONS AND ANSWERS 2026
Origin of the fire -correct Answers -The same as the
cause.
Electrical arcing -correct Answers -Evidence of fire origin.
Correct order of evidence handling -correct Answers -
Collect, package, label, document.
Fire tetrahedron component -correct Answers -Not
including Light.
Backdraft -correct Answers -Occurs when oxygen is
introduced into an oxygen-depleted environment.
Bias in fire investigation -correct Answers -Must be
avoided by a fire investigator.
First step in the scientific method -correct Answers -Form
a hypothesis.
Tool for evaluating circuit integrity -correct Answers -
Multimeter.
, 2
High-order explosions -correct Answers -Result in large
craters and extensive fragmentation.
V-patterns -correct Answers -Always point to the point of
origin.
Chain of custody -correct Answers -Essential for
evidence integrity.
Recommended method for fire investigation according to
NFPA 921 -correct Answers -Scientific method.
Opinions in court -correct Answers -A fire investigator
cannot offer opinions outside their area of expertise.
Factors affecting fire pattern appearance -correct
Answers -Ventilation, Material type, Suppression efforts,
All of the above.
NFPA 921 requirement -correct Answers -Requires fire
investigators to be licensed engineers.
Digital photographs -correct Answers -Can be altered
and are not admissible in court.
Cause of an explosion -correct Answers -Not typically a
cause.
