FSC100: The Real CSI Final Exam Questions & Answers
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FSC100: The Real CSI
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FSC100: The Real CSI
FSC100: The Real CSI Final Exam
what could be physical evidence? - Answer- objects that can:
- establish that a crimme has been committed
- make associations (crime to victim, victim to perpetrator)
recognition - Answer- - of not just what but where
- situation of items relative to each ot...
FSC100: The Real CSI Final Exam
what could be physical evidence? - Answer- objects that can:
- establish that a crimme has been committed
- make associations (crime to victim, victim to perpetrator)
recognition - Answer- - of not just what but where
- situation of items relative to each other
where to start searching - Answer- consider paths of contamination from:
- perpetrator activity
- first responders
- emergency response
- look out for media interference
how do you search a crime scene? - Answer- - lane/strip search
- line search
- circle/spiral search
- zone search
what are some other search tools? - Answer- canine units
metal detectors
heavy machinery
thermal imaging
ground penetrating radar
search method is based on factors such as: - Answer- - indoor/outdoor
- size
- urgency
- lighting available
- what is being searched for
- what evidence was already found
- concentration of material
- people available
lane/strip search - Answer- good for large areas
good for uneven terrain
line search limit - Answer- must remain in a super straight line with everyone else as
you move across crime scene, at the same pace
circle/spiral search benefits - Answer- good for locating additional items associated
to an existing piece of evidence
typically done indoors - too difficult to do outdoors
circle/spiral limits - Answer- difficult to stay in a perfect spiral path to ensure nothing
is missed
,zone search benefits - Answer- good for where other patterns won't work - typically
in a house divided by rooms - used where scene is already broken up into zones
how is evidence collection selective? - Answer- - selectivity is determined by
collector
- need knowledge about crime lab techniques, capabilities, limitations
- lack of this knowledge can lead to evidence being overlooked or collected
improperly
why do you need a reference sample? - Answer- to compare unknown samples to it
how do you prevent contamination? - Answer- - use proper PPE
- clean tools between collection of different samples
- change gloves frequently
- package items separately to avoid cross contamination
things that are commonly used to collect evidence - Answer- - plastic pill bottles
- manila envelopes
- tinfoil 'boats'
- cardboard pillboxes
- sealable plastic bags
- paper bags of various sizes
what is the druggist's fold used for? - Answer- to collect trace evidence
what do you do with wet or bloodstained materials? - Answer- air dry them before
packaging and/or place into paper bags so they have room to breathe and dry off
what should be done with items soiled with biological fluid that cannot be dried? -
Answer- should be placed in a cooler with ice packs
how do you seal packaged evidence? - Answer- with tamper-proof tape, then initial
the seal
how do you document evidence? - Answer- - case number
- item number
- location
- name of collector
- date and time of discovery
- date and time of collection
- description of item
why might a sample not be submitted for analysis? - Answer- - item type has low
success rate/expectation of obtaining reliable results
- not the most relevant to address allegations
- no probative value
, - an individual is already associated with the item
- item has previously been tested for body fluids or fingerprints
sequential processing - Answer- use of as many developmental techniques as
necessary to process a piece of latent evidence, applying least invasive to most
invasive
what are the systems in place to prioritize samples/cases? - Answer- - severity of
offense
- type of evidence
- probative value of evidence
- urgency/risks to public
what are the two types of DNA testing services at the CFS? - Answer- high volume
services and violent crime services
what is the purpose of high volume services? - Answer- for lower severity situations,
such as breaking & entering, theft, drug, and weapon offenses
what are the three types of evidence accepted in high volume services? - Answer- 1)
cigarette butts
2) cut-outs from envelope flaps
3) swabs of items suspected to have DNA
should you do presumptive tests prior to submitting evidence to high volume
services? - Answer- no
how many items can you submit to the high volume services per case? - Answer-
three pieces of evidence
types of swabs accepted to high volume services - Answer- - swabs of suspected
blood
- saliva swabs
- swabs of worn items
- handler swabs
what are handled swabs? - Answer- handled items must have been brought to the
scene by perpetrator during commission of offense and are limited to firearms,
knives, and tools with defined grips
what swabs are not accepted by the high volume service? - Answer- - keys
- cigarette lighters
- door knobs and drawer handles
- ammunition and shell casings
what is the purpose of violent crime services? - Answer- for homicide, attempted
homicide, sexual assault, robbery, and vehicles striking people (leading to death)
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