CBP Biometric Performance Metrics and Testing Flashcards
6 cards from real CBP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CBP Biometric Performance Metrics and Testing flashcards as text
What is the purpose of a vulnerability assessment in biometric system testing?
Answer: To identify weaknesses that could be exploited by attackers
A vulnerability assessment systematically identifies and evaluates weaknesses in a biometric system that could be exploited to compromise security.
What does 'decidability index' (d-prime) measure in biometric system analysis?
Answer: The separation between genuine and impostor score distributions
The decidability index (d') quantifies how well a biometric system separates genuine match scores from impostor scores — higher values indicate better discrimination.
Why is 'Failure to Acquire Rate (FTA)' an important metric in biometric system evaluation?
Answer: It quantifies how often the system cannot capture a usable biometric sample
FTA measures the frequency at which a biometric system fails to capture a sample of sufficient quality for processing, affecting overall usability.
What is 'presentation attack detection' (PAD) testing designed to evaluate?
Answer: The system's ability to detect and reject spoofed or artificial biometric samples
PAD testing evaluates a biometric system's ability to detect and reject fake or spoofed biometric inputs, such as printed fingerprints or face masks.
In biometric evaluation, what is an 'operational evaluation'?
Answer: Testing conducted in a live, real-world deployment environment
An operational evaluation tests a biometric system in its actual deployment environment with real users under live conditions.
When comparing two biometric systems, which performance metric is most commonly used as a single summary figure of merit?
Answer: Equal Error Rate (EER)
The EER is widely used as a concise, single-number comparison of biometric accuracy because it balances both FAR and FRR at a single threshold point.
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