Law Enforcement Criminal Investigation Fundamentals 4

Question 1

DNA evidence at a scene is most reliably collected from a touched surface using:

Accepted Answer

A sterile swab moistened with distilled water

Answer

Bare hands

Answer

Adhesive tape only

Answer

A magnet

Question 2

What is the primary purpose of AFIS in a criminal investigation?

Accepted Answer

Searching and matching fingerprints against a database

Answer

Tracking vehicle registrations

Answer

Analyzing blood spatter

Answer

Storing mugshots only

Question 3

Latent fingerprints on a non-porous surface like glass are commonly developed using:

Accepted Answer

Fingerprint powder or cyanoacrylate (superglue) fuming

Answer

Ninhydrin

Answer

Iodine vapor only

Answer

Luminol

Question 4

Luminol is used at a crime scene primarily to detect:

Accepted Answer

Trace amounts of blood that may have been cleaned up

Answer

Gunshot residue

Answer

Fingerprints

Answer

Drug residue

Question 5

Why must biological evidence such as bloodstained clothing be packaged in paper rather than sealed plastic?

Accepted Answer

Plastic traps moisture and promotes mold and DNA degradation

Answer

Paper is cheaper

Answer

Plastic is illegal to use

Answer

Paper looks more professional

Question 6

The Daubert standard governs what aspect of forensic evidence?

Accepted Answer

The admissibility of expert and scientific testimony in court

Answer

How evidence is stored

Answer

The number of investigators on a case

Answer

Crime scene photography rules

Question 7

When collecting a firearm as evidence, investigators should avoid:

Accepted Answer

Inserting anything into the barrel or wiping the surfaces

Answer

Documenting its location

Answer

Photographing it

Answer

Recording the serial number