©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
IAI - CSA Techniques of Crime Scene
Investigation Exam Questions And Answers
|Latest 2025 | Guaranteed Pass.
Evidence - Answer✔Something legally submitted to a competent trier of fact as a means of
ascertaining the truth of any alleged matter under investigation.
Two Broad Types of Evidence - Answer✔1. Testimonial Evidence
2. Real, or Physical Evidence
What is Physical Evidence? - Answer✔Any Type of Evidence with an objective existence, that is
anything with size, shape, and dimension.
Physical Evidence may also be considered either - Answer✔1. Direct evidence (evidence that
supports a conclusion of fact without inference)
OR
2. Circumstantial evidence (evidence that requires inference to connect it to a conclusion of
fact).
Physical Evidence - Answer✔May be more reliable than eyewitnesses to crimes.
CSI Effect - Answer✔Has made jurors expect, even demand, physical evidence.
One Factor making the public's notion of the role of physical evidence - Answer✔Science and
technology are perceived by most of the public to be unbiased and not subject to manipulation.
Negative Evidence - Answer✔the absence of physical evidence. May provide useful information
and even stop defense arguments at the time of trial
Can every item of physical evidence be directly associated to a specific person, place, or thing
and believe that it is possible to link that evidence to a unique source. - Answer✔No
Can Majority of Physical Evidence found at crime scenes be only Classified - Answer✔True
Classification of Evidence - Answer✔Meaning physical evidence placed into groups with all
other items having the same properties or class characteristics.
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
Types of Pattern Evidence - Answer✔(fingerprints, firearms evidence, footwear evidence, tire
impressions, and tool marks)
Practitioners would offer a conclusive opinion that the known and questioned item came from
a common source to a reasonable degree of scientific certainty.
The ability to associate an item of evidence to a sole, unique source is currently being hotly
debated. - Answer✔True
What does DNA testing use? - Answer✔Statistical occurrence of discrete pieces of genetic
material or alleles.
Can physical evidence that is identified corroborate testimony, place a subject at a scene, and
be useful in a variety of ways as an interrogation tool? - Answer✔Yes
Chain of Custody - Answer✔Proof that evidence collected during an investigation and the
evidence ultimately submitted to the court are one and the same. To prove that the integrity of
the physical evidence has been maintained. Shows who had contact with the evidence, at what
time, under what circumstances, and what changes, if any, were made to the evidence.
General Rule on collecting evidence - Answer✔As much material as is reasonably possible to
collect should be taken. More is better than less.
What is needed for known/exemplar samples for DNA? - Answer✔Blood samples or buccal
(cheek) swabs from the victim and suspect are needed.
What is needed for known/reference or exemplar samples for Automobile Specimens? -
Answer✔A known sample of paint from the questioned vehicle must be submitted for
comparison.
What is a good practice for packaging small objects? - Answer✔Double-wrap very small objects
such as hair, fibers, or glass fragments. These items should first be folded up in a sheet of
paper, such as a pharmacist's fold, and then placed in an envelope
How should any potential hazard evidence be labeled? - Answer✔Labeled with any potential
hazards such as biohazard stickers
Use of Expert Witnesses - Answer✔Because scientific principles relating to physical evidence
are often beyond the knowledge of laypeople, courts permit persons with specialized training
and skills to testify in court to explain and interpret scientific evidence to juries, as well as offer
their opinion based on the evidence. Expert witnesses can be used when the subject of the
testimony is beyond the experience and knowledge of ordinary laypeople.
What is the deciding factor for potential bias? - Answer✔The integrity of the professional and
the organization. All forensic practitioners owe a duty to the truth.
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
What is the guidelines for Forensic Labs? - Answer✔The American Society of Crime Laboratory
Directors* (ASCLD) has a code of professional practices, Guidelines for Forensic Laboratory
Management Practices (Adopted 1987, Revised 1994).
Who are often called to court to testify as expert witnesses? - Answer✔Forensic Practitioners
What is important for a witness to know about cross examination? - Answer✔The witness
dictates the pace. You do not need to answer any question yes or no. Explain your rationale.
It is acceptable to say, "I don't believe I am qualified to answer that question."
Do not box yourself into a corner. Beware of questions like, "Have you ever made a mistake"
and "Isn't it possible?"
What is the final element in a crime scene investigation? - Answer✔Teamwork.
Who must work cooperatively in a crime scene investigation? - Answer✔Each element of the
criminal investigation—uniformed officer, detective, crime scene specialist, forensic scientist,
coroner, forensic pathologist, photographer, prosecutor, defense attorney, plus all the other
vital players in the "system"
IAI - Answer✔International Association for Identification
What does the IAI publish? - Answer✔The Journal of Forensic Identification
Crime Scene Environments - Answer✔Dynamic, rapidly changing.
The first officer to arrive on a crime scene must be concerned about? - Answer✔Countless
Details
What is one of the major tasks of the first officer? - Answer✔Protect the crime scene
Locard's Exchange Principle - Answer✔It is not possible for anyone to enter a place without
changing it in some way, either by bringing something to it or by removing something from it.
The notion of an individual coming in contact with a scene and changing it in some way.
Every contact leaves a Trace
Edmond Locard - Answer✔French Forensic Scientist - Locard Exchange Principle
What is the most effective way to minimize loss of information? - Answer✔Thorough, detailed
contemporaneous note taking, that is, recording significant as well as mundane observations at
the time they are noticed.
3
IAI - CSA Techniques of Crime Scene
Investigation Exam Questions And Answers
|Latest 2025 | Guaranteed Pass.
Evidence - Answer✔Something legally submitted to a competent trier of fact as a means of
ascertaining the truth of any alleged matter under investigation.
Two Broad Types of Evidence - Answer✔1. Testimonial Evidence
2. Real, or Physical Evidence
What is Physical Evidence? - Answer✔Any Type of Evidence with an objective existence, that is
anything with size, shape, and dimension.
Physical Evidence may also be considered either - Answer✔1. Direct evidence (evidence that
supports a conclusion of fact without inference)
OR
2. Circumstantial evidence (evidence that requires inference to connect it to a conclusion of
fact).
Physical Evidence - Answer✔May be more reliable than eyewitnesses to crimes.
CSI Effect - Answer✔Has made jurors expect, even demand, physical evidence.
One Factor making the public's notion of the role of physical evidence - Answer✔Science and
technology are perceived by most of the public to be unbiased and not subject to manipulation.
Negative Evidence - Answer✔the absence of physical evidence. May provide useful information
and even stop defense arguments at the time of trial
Can every item of physical evidence be directly associated to a specific person, place, or thing
and believe that it is possible to link that evidence to a unique source. - Answer✔No
Can Majority of Physical Evidence found at crime scenes be only Classified - Answer✔True
Classification of Evidence - Answer✔Meaning physical evidence placed into groups with all
other items having the same properties or class characteristics.
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
Types of Pattern Evidence - Answer✔(fingerprints, firearms evidence, footwear evidence, tire
impressions, and tool marks)
Practitioners would offer a conclusive opinion that the known and questioned item came from
a common source to a reasonable degree of scientific certainty.
The ability to associate an item of evidence to a sole, unique source is currently being hotly
debated. - Answer✔True
What does DNA testing use? - Answer✔Statistical occurrence of discrete pieces of genetic
material or alleles.
Can physical evidence that is identified corroborate testimony, place a subject at a scene, and
be useful in a variety of ways as an interrogation tool? - Answer✔Yes
Chain of Custody - Answer✔Proof that evidence collected during an investigation and the
evidence ultimately submitted to the court are one and the same. To prove that the integrity of
the physical evidence has been maintained. Shows who had contact with the evidence, at what
time, under what circumstances, and what changes, if any, were made to the evidence.
General Rule on collecting evidence - Answer✔As much material as is reasonably possible to
collect should be taken. More is better than less.
What is needed for known/exemplar samples for DNA? - Answer✔Blood samples or buccal
(cheek) swabs from the victim and suspect are needed.
What is needed for known/reference or exemplar samples for Automobile Specimens? -
Answer✔A known sample of paint from the questioned vehicle must be submitted for
comparison.
What is a good practice for packaging small objects? - Answer✔Double-wrap very small objects
such as hair, fibers, or glass fragments. These items should first be folded up in a sheet of
paper, such as a pharmacist's fold, and then placed in an envelope
How should any potential hazard evidence be labeled? - Answer✔Labeled with any potential
hazards such as biohazard stickers
Use of Expert Witnesses - Answer✔Because scientific principles relating to physical evidence
are often beyond the knowledge of laypeople, courts permit persons with specialized training
and skills to testify in court to explain and interpret scientific evidence to juries, as well as offer
their opinion based on the evidence. Expert witnesses can be used when the subject of the
testimony is beyond the experience and knowledge of ordinary laypeople.
What is the deciding factor for potential bias? - Answer✔The integrity of the professional and
the organization. All forensic practitioners owe a duty to the truth.
2
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
What is the guidelines for Forensic Labs? - Answer✔The American Society of Crime Laboratory
Directors* (ASCLD) has a code of professional practices, Guidelines for Forensic Laboratory
Management Practices (Adopted 1987, Revised 1994).
Who are often called to court to testify as expert witnesses? - Answer✔Forensic Practitioners
What is important for a witness to know about cross examination? - Answer✔The witness
dictates the pace. You do not need to answer any question yes or no. Explain your rationale.
It is acceptable to say, "I don't believe I am qualified to answer that question."
Do not box yourself into a corner. Beware of questions like, "Have you ever made a mistake"
and "Isn't it possible?"
What is the final element in a crime scene investigation? - Answer✔Teamwork.
Who must work cooperatively in a crime scene investigation? - Answer✔Each element of the
criminal investigation—uniformed officer, detective, crime scene specialist, forensic scientist,
coroner, forensic pathologist, photographer, prosecutor, defense attorney, plus all the other
vital players in the "system"
IAI - Answer✔International Association for Identification
What does the IAI publish? - Answer✔The Journal of Forensic Identification
Crime Scene Environments - Answer✔Dynamic, rapidly changing.
The first officer to arrive on a crime scene must be concerned about? - Answer✔Countless
Details
What is one of the major tasks of the first officer? - Answer✔Protect the crime scene
Locard's Exchange Principle - Answer✔It is not possible for anyone to enter a place without
changing it in some way, either by bringing something to it or by removing something from it.
The notion of an individual coming in contact with a scene and changing it in some way.
Every contact leaves a Trace
Edmond Locard - Answer✔French Forensic Scientist - Locard Exchange Principle
What is the most effective way to minimize loss of information? - Answer✔Thorough, detailed
contemporaneous note taking, that is, recording significant as well as mundane observations at
the time they are noticed.
3
