NAFI CFEI ACTUAL CERTIFICATION
EXAMINATION BUNDLE 2026
COMPREHENSIVE QUESTIONS WITH
EXPERT VERIFIED ANSWERS GRADED A+
⩥ 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.
EXAMINATION BUNDLE 2026
COMPREHENSIVE QUESTIONS WITH
EXPERT VERIFIED ANSWERS GRADED A+
⩥ 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.
