CBP CBP Biometric Performance Metrics and Testing 2 — Questions and Answers
Question 1: Which testing scenario evaluates a biometric system using data collected in a controlled lab environment separate from real-world conditions?
- Operational evaluation
- Technology evaluation (Correct answer)
- Scenario evaluation
- Field evaluation
Correct answer: Technology evaluation
Technology evaluations test biometric algorithms using pre-collected datasets in controlled conditions, independent of operational hardware.
Question 2: What is the primary purpose of a biometric scenario evaluation?
- To test algorithms against archived datasets
- To simulate real-world conditions using a specific system configuration (Correct answer)
- To measure database storage performance
- To audit compliance with privacy laws
Correct answer: To simulate real-world conditions using a specific system configuration
Scenario evaluations test complete biometric systems under simulated but realistic conditions to predict operational performance.
Question 3: What does throughput rate measure in biometric system testing?
- The accuracy of matching algorithms
- The number of individuals processed per unit of time (Correct answer)
- The storage capacity of the biometric database
- The error rate during enrollment
Correct answer: The number of individuals processed per unit of time
Throughput rate measures how many individuals a biometric system can process (enroll or verify) within a defined time period.
Question 4: In biometric testing, what does 'ground truth' refer to?
- The physical location of the biometric sensor
- The verified, authoritative identity information used to evaluate system decisions (Correct answer)
- The baseline FAR setting for a new deployment
- The minimum quality score for enrollment
Correct answer: The verified, authoritative identity information used to evaluate system decisions
Ground truth is the known, verified set of correct identities used as the reference standard to measure how accurately a biometric system performs.
Question 5: What is a 'wolf attack' in biometric security testing?
- A denial-of-service attack on a biometric server
- An attempt to find biometric samples that falsely match many identities (Correct answer)
- Physical destruction of biometric hardware
- Cloning of a legitimate user's biometric template
Correct answer: An attempt to find biometric samples that falsely match many identities
A wolf attack exploits a biometric system by submitting specially crafted samples designed to match a large number of stored templates, maximizing false acceptances.
Question 6: Which standard body publishes key biometric testing and performance methodology standards used in CBP certification?
- IEEE
- ISO/IEC JTC1 SC37 (Correct answer)
- W3C
- ANSI X9
Correct answer: ISO/IEC JTC1 SC37
ISO/IEC JTC1 SC37 (Subcommittee 37) is the primary international standards body responsible for biometric testing methodology, conformance, and performance standards.
CBP CBP Biometric Performance Metrics and Testing 2
Which testing scenario evaluates a biometric system using data collected in a controlled lab environment separate from real-world conditions?