ETC Crime Scene Processing 2

Question 1

Which of the following best describes the 'zone search' method at a crime scene?

Accepted Answer

Dividing the scene into sectors and assigning each to a different searcher

Answer

The zone search divides the scene into sectors assigned to individual searchers, reducing missed areas and overlapping coverage.

Question 2

When collecting a wet biological stain from fabric, the correct initial packaging is:

Accepted Answer

Paper bag after air-drying the item

Answer

Wet biological evidence must be air-dried before packaging in paper to prevent mold growth and DNA degradation.

Question 3

A technician discovers latent prints on a firearm. What is the recommended sequence before processing?

Accepted Answer

Render safe, photograph, swab for DNA, then process for prints

Answer

Firearms must be rendered safe first for officer safety, then documented, with DNA swabbing done before print processing to avoid cross-contamination.

Question 4

The primary purpose of using an alternate light source (ALS) at a crime scene is to:

Accepted Answer

Visualize trace evidence and biological stains not visible to the naked eye

Answer

ALS causes certain substances—such as body fluids, fibers, and latent prints—to fluoresce, making otherwise invisible evidence detectable.

Question 5

Which documentation method provides the most accurate spatial data for reconstructing a crime scene?

Accepted Answer

Total station or 3D laser scanning

Answer

Total stations and 3D laser scanners capture precise x, y, z coordinates of all scene elements, enabling accurate reconstruction.

(ETC) Evidence Technician Certification Practice Test

(ETC) Evidence Technician Certification Practice Test

ETC Crime Scene Processing 2