NAFI CFEI Exam Practice Test | 200 Questions with Verified Answers | Latest 2026/2027 | 100% Correct| Graded A.

NAFI CFEI Exam Practice Test | 200 Questions with Verified Answers | Latest 2026/2027 | 100% Correct| Graded A. deductive reasoning - ANSWER -Testing of a hypothesis by comparing the investigators hypothesis to all known facts is using____________ reasoning. a.Deductive b.Inductive c.Both A and B d.Neither A or B all of the above - ANSWER -Which of the following can be defined as a fuel gas? a.Natural gas b.Liquefied petroleum gas c.Manufactured gases d. all of the above all of the above - ANSWER -Prior to conducting an on scene investigation many things should be identified, including: a.Date and time of incident b.Size and complexity of the incident c.Purpose of the investigation d.All of the above true - ANSWER -Luminescent flame temperatures are dependant on the fuel to oxygen ratio. a.True b.False timeline - ANSWER -The investigative tool used to graphically or in a narrative manner depict events relating to a fire or explosion in chronological order is called: a.Timeline b.Systems analysis c.Fault tree d.Computer modeling Fault tree - ANSWER -A diagram that places, in a logical sequence, the conditions and chains of events that are necessaryfor a fire or explosion to occur is called: a.Timeline b.Systems analysis c.Fault tree d.Computer modeling true - ANSWER -Protected areas result from an object or item prohibiting the products of combustion from depositingon materials which the object protects. a.True b.False backdraft - ANSWER -A deflagration resulting from the sudden introduction of air into a confined space containing oxygendeficient products of incomplete combustion. a.Flashover b.Flameover c.Smoke Explosion d.Backdraft the geometric shape of the pattern - ANSWER -What does the "V" in V-pattern represent? a.Vector - pattern b.Virtual - pattern c.The geometric shape of the pattern d.Represents the name of the first individual who recognized the pattern There is a gasoline pattern found on the premises - ANSWER -Which of the following is NOT one of the three elements of arson? a.There has been burning of property b.The burning is incendiary in origin c.The burning is shown to be started with malice with the intent of destroying property d.There is a gasoline can found on the premises false - ANSWER -A BLEVE is a type of explosion involving the ignition of a dispersed vapor cloud? a.True b.False true - ANSWER -Adequate debris removal is essential in an origin investigation? a.True b.False true - ANSWER -The court usually permits the fire and explosion investigator to refresh his memory from his noteswhile testifying in a deposition or trial? a.True b.False false - ANSWER -In a fire, the human body is completely consumed? a.True b.False all of the above - ANSWER -Fire deaths can occur from: a.Inhalation of hot gases b.Inhalation of toxic gases c.Thermal Burns d.All of the Above true - ANSWER -Probable cause is not needed to obtain an administrative search warrant. a.True b.False