CFI Surveillance Methods & Technology 3

Question 1

A cell phone tower records showing a suspect's device pinging near a fire scene are BEST described as what type of evidence?

Accepted Answer

Digital circumstantial evidence

Answer

Cell tower location records are digital circumstantial evidence that can corroborate or contradict a suspect's stated location without directly proving guilt.

Question 2

When preserving DVR evidence at a fire scene, the chain of custody requires the investigator to:

Accepted Answer

Document the device serial number, date, time, and all persons handling it

Answer

A proper chain of custody requires meticulous documentation of every person who handles evidence and all associated identifying information.

Question 3

Which surveillance technique involves analyzing the pattern of false alarms prior to a fire to identify potential arson pre-planning?

Accepted Answer

Temporal pattern analysis

Answer

Temporal pattern analysis of alarm histories can reveal rehearsal behavior or deliberate testing of detection systems by an arsonist.

Question 4

Automated License Plate Recognition (ALPR) data collected near a fire scene is obtained through:

Accepted Answer

Law enforcement databases, private networks, or subpoena of commercial systems

Answer

ALPR data may be accessed through police databases, private parking or tolling networks, or legal process such as subpoenas served on commercial operators.

Question 5

A fire investigator reviewing ATM camera footage notes the image is distorted near the edges. This is MOST likely caused by:

Accepted Answer

Wide-angle or fisheye lens barrel distortion

Answer

Wide-angle and fisheye lenses commonly used in ATM cameras introduce barrel distortion that curves straight lines near image edges.

(CFI) Certified Fire Investigator Practice Test

(CFI) Certified Fire Investigator Practice Test

CFI Surveillance Methods & Technology 3