Tenprint Fingerprint Certification Tenprint Fingerprint Identification Techniques 2 — Questions and Answers
Question 1: Which ridge detail is defined as a short ridge that does not connect to another ridge at either end?
- Enclosure
- Bifurcation
- Short ridge (independent ridge) (Correct answer)
- Ridge ending
Correct answer: Short ridge (independent ridge)
A short ridge, also called an independent ridge, is a ridge segment that terminates at both ends without connecting to other ridges.
Question 2: When comparing latent prints to tenprint exemplars, which method involves superimposing one image over another at the same scale?
- ACE-V
- Overlay comparison (Correct answer)
- Side-by-side analysis
- Mosaicking
Correct answer: Overlay comparison
Overlay comparison involves placing one image directly over another at the same magnification to visually align corresponding ridge details.
Question 3: In the Henry Classification System, a finger is assigned a value only if it bears which pattern type?
- Loop
- Whorl (Correct answer)
- Arch
- Tented arch
Correct answer: Whorl
In the Henry system, numerical values are assigned exclusively to fingers bearing whorl patterns; loops and arches receive no numerical value.
Question 4: What term describes the imaginary line drawn between the two type lines at the point where they diverge in a loop pattern?
- Core axis
- Delta line (Correct answer)
- Divergence baseline
- Type line axis
Correct answer: Delta line
The delta line is the imaginary line connecting the two diverging type lines and is used to locate the delta point in a loop.
Question 5: Which of the following conditions would most likely cause a fingerprint to be classified as 'scarred' rather than assigned a pattern type?
- Naturally dry skin
- A permanent scar that obliterates ridge flow (Correct answer)
- Temporary ink smearing
- Age-related ridge flattening
Correct answer: A permanent scar that obliterates ridge flow
Permanent scarring that destroys the ridge pattern prevents reliable classification and is notated as a scar rather than a pattern type.
Question 6: Which finger position is used as the primary search key in most AFIS databases when all ten fingers are available?
- Right index finger
- Left thumb
- Right thumb (Correct answer)
- Left index finger
Correct answer: Right thumb
The right thumb is traditionally used as the primary search key in AFIS because it typically yields high-quality impressions and is the most commonly recorded finger.
Question 7: What is the minimum number of corresponding Galton details historically cited in some jurisdictions as a standard for a fingerprint identification?
- 4
- 8
- 12 (Correct answer)
- 16
Correct answer: 12
Twelve corresponding Galton details was historically cited in many jurisdictions as a threshold for fingerprint identification, though modern standards focus on quality over quantity.
Tenprint Fingerprint Certification Tenprint Fingerprint Identification Techniques 2
Which ridge detail is defined as a short ridge that does not connect to another ridge at either end?