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IAI-CSA TECHNIQUES OF CRIME SCENE
INVESTIGATION | ACTUAL EXAM QUESTIONS
AND VERIFIED ANSWERS|ALREADY GRADED
A+
Evidence - Correct-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 - Correct-answer-1. Testimonial Evidence
2. Real, or Physical Evidence
What is Physical Evidence? - Correct-answer-Any Type of Evidence with an
objective existence, that is anything with size, shape, and dimension.
Physical Evidence may also be considered either - Correct-answer-1. Direct
evidence (evidence that supports a conclusion of fact without inference)
OR
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2. Circumstantial evidence (evidence that requires inference to connect it to a
conclusion of fact).
Physical Evidence - Correct-answer-May be more reliable than eyewitnesses to
crimes.
CSI Effect - Correct-answer-Has made jurors expect, even demand, physical
evidence.
One Factor making the public's notion of the role of physical evidence - Correct-
answer-Science and technology are perceived by most of the public to be
unbiased and not subject to manipulation.
Negative Evidence - Correct-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. - Correct-answer-No
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Can Majority of Physical Evidence found at crime scenes be only Classified -
Correct-answer-True
Classification of Evidence - Correct-answer-Meaning physical evidence placed into
groups with all other items having the same properties or class characteristics.
Types of Pattern Evidence - Correct-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. - Correct-answer-True
What does DNA testing use? - Correct-answer-Statistical occurrence of discrete
pieces of genetic material or alleles.
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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? - Correct-
answer-Yes
Chain of Custody - Correct-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 - Correct-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? - Correct-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? - Correct-answer-A known sample of paint from the questioned
vehicle must be submitted for comparison.
IAI-CSA TECHNIQUES OF CRIME SCENE
INVESTIGATION | ACTUAL EXAM QUESTIONS
AND VERIFIED ANSWERS|ALREADY GRADED
A+
Evidence - Correct-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 - Correct-answer-1. Testimonial Evidence
2. Real, or Physical Evidence
What is Physical Evidence? - Correct-answer-Any Type of Evidence with an
objective existence, that is anything with size, shape, and dimension.
Physical Evidence may also be considered either - Correct-answer-1. Direct
evidence (evidence that supports a conclusion of fact without inference)
OR
,2|Page
2. Circumstantial evidence (evidence that requires inference to connect it to a
conclusion of fact).
Physical Evidence - Correct-answer-May be more reliable than eyewitnesses to
crimes.
CSI Effect - Correct-answer-Has made jurors expect, even demand, physical
evidence.
One Factor making the public's notion of the role of physical evidence - Correct-
answer-Science and technology are perceived by most of the public to be
unbiased and not subject to manipulation.
Negative Evidence - Correct-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. - Correct-answer-No
,3|Page
Can Majority of Physical Evidence found at crime scenes be only Classified -
Correct-answer-True
Classification of Evidence - Correct-answer-Meaning physical evidence placed into
groups with all other items having the same properties or class characteristics.
Types of Pattern Evidence - Correct-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. - Correct-answer-True
What does DNA testing use? - Correct-answer-Statistical occurrence of discrete
pieces of genetic material or alleles.
, 4|Page
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? - Correct-
answer-Yes
Chain of Custody - Correct-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 - Correct-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? - Correct-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? - Correct-answer-A known sample of paint from the questioned
vehicle must be submitted for comparison.
