Biometric MCQ's Part-4

1. Facial recognition based on 3 levels which one is the odd one out?

1. skin color & face shape
2. scar marks
3. tattoo marks
4. facial structure

ANSWER-3

EXPLANATION

Facial recognition:- a way of identifying or confirming an individual’s identity using their face. Facial recognition systems can be used to identify people in photos, videos, or in real-time. It is used in:-Unlocking phones, Law enforcement, Airports and border control, Finding missing persons, Reducing retail crime, Improving retail experiences, Banking, Marketing and advertising, Healthcare, Tracking student or worker attendance, Recognizing drivers, Monitoring gambling addictions etc.

2. What is the full-form of AFIS?

1. Automatic fingerprint identifiable system
2. Automatic face identification system
3. Automated forged document identification system
4. Automated fingerprint identification system

ANSWER-4

EXPLANATION

Automated Fingerprint Identification System (AFIS):- a biometric identification (ID) methodology that uses digital imaging technology to obtain, store, and analyze fingerprint data. It was originally used by the U.S. Federal Bureau of Investigation (FBI) in criminal cases.

3. During Iris sample collection which one has been measured?

1. tedious patterns of collarettes, pigment spots, furrows, crypts, arching
2. iris shape, colour, size, furrows, pigment spots
3. pigment spots, iris shape, arching, tedious patterns of collarettes, size
4. none of these

ANSWER-1

EXPLANATION

Collarette is the thickest region of the iris, separating the pupillary portion from the ciliary portion. It is a vestige of the coating of the embryonic pupil. It is typically defined as the region where the sphincter muscle and dilator muscle overlap.

Pigmented rings are wide, colored bands around the pupil that are a different shade than the rest of your iris. 

Crypts are tiny diamond-shaped holes in the iris that can range in size. 

Furrows are a series of pale lines that curve around the iris, and they're produced as the pupil opens and closes in response to light.

4. During hand scanning important features are captured. find the correct option-

1. ridge, valley, principal axis, termination & bifurcation points
2. palm geometry, ridge, valley, principle lines, termination & bifurcation points
3. palm geography, ridge, peaks, main axis & termination & bifurcation points
4. none of these

ANSWER-2

5. In a typical ear recognition system which one of the following options is the second step?

1. Compares the features extracted from two ear images and generates a match score
2. Localization of the position and spatial extent of the ear in an image
3. Processes the match score(s) and establishes the identity of the subject.
4. Extracts discriminative features from the ear

ANSWER-4

6.  Find the odd one out in regards to ear print-

1. Structure of the ear has been observed to be stable despite aging, and ear growth is almost linear after the age of four
2. It is minimally impacted by changes in facial expression
3. Image acquisition involve explicit contact with the sensor.
4. All are correct

ANSWER-3

7. The iris image is partitioned into two zones these are central pupillary zone and
surrounding ciliary zone. These two zones are sub-divided by a circular zigzag ridgeline. What is the name of this ridgeline?

1. Fuchs crypts
2. Collarette
3. Concentric lines
4. Radial lines

ANSWER-2

8. Which part of iris permit fluids to quickly enter and exit the iris during dilation and contraction of the pupil?

1. Antitragus
2. Crypts
3. Sclera
4. Collarette

ANSWER-2

9.  A biometric modality that uses the cadence of an individual's typing pattern for recognition is known as-

1. Keystroke recognition
2. Keystroke dynamics
3. Both a & b
4. None of these

ANSWER-2

EXPLANATION

Keystroke dynamics:- typing biometrics refers to the automated method of identifying or confirming the identity of an individual based on the manner and the rhythm of typing on a keyboard. Keystroke dynamics is a behavioral biometric, this means that the biometric factor is ‘something you do’.

Keystroke recognition has been defined as the process of measuring and assessing a typing rhythm on digital devices, including on: computer keyboards, mobile phones, and touch screen panels.

10. What do you understand by voice print?

1. a specific type of graph obtained from waves originated from voice
2. this graph may be similar in some cases
3. both are correct
4. both are incorrect

ANSWER-1

EXPLANATION

A voice print is a digital model of the unique vocal characteristics of an individual.  Voiceprints are created by specialized computer programs which process speech samples, typically in WAV format.  The creation of a voiceprint is often referred to as “enrollment” in a biometric system.