CBP CBP Biometric Performance Metrics and Testing 1

Question 1

What does the False Acceptance Rate (FAR) measure in a biometric system?

Accepted Answer

The rate at which imposters are incorrectly accepted

Answer

The rate at which legitimate users are rejected

Answer

The rate at which enrollments fail

Answer

The rate at which the sensor malfunctions

Question 2

What does the False Rejection Rate (FRR) indicate in biometric performance evaluation?

Accepted Answer

The percentage of legitimate users incorrectly denied access

Answer

The percentage of impostors accepted

Answer

The threshold score for a match decision

Answer

The time taken to process a biometric sample

Question 3

The Equal Error Rate (EER) is the point at which:

Accepted Answer

FAR and FRR are equal

Answer

FAR equals 0%

Answer

FRR equals 0%

Answer

Throughput is maximized

Question 4

Which metric specifically measures a biometric system's ability to correctly identify enrolled users across a database?

Accepted Answer

Identification Rate (Rank-1)

Answer

Failure to Enroll Rate (FTE)

Answer

False Match Rate (FMR)

Answer

Failure to Acquire Rate (FTA)

Question 5

What is the Failure to Enroll Rate (FTE) in biometrics?

Accepted Answer

The rate at which individuals cannot be enrolled due to insufficient biometric quality

Answer

The rate at which enrolled users are rejected during verification

Answer

The percentage of false matches in a database

Answer

The frequency of sensor calibration failures

Question 6

In a Receiver Operating Characteristic (ROC) curve for biometrics, what do the axes typically represent?

Accepted Answer

FAR on X-axis and FRR on Y-axis

Answer

FRR on X-axis and FAR on Y-axis

Answer

Throughput on X-axis and accuracy on Y-axis

Answer

Threshold on X-axis and EER on Y-axis