Question 10 (practice exam 12) (additional)

Q: What does FRR (False Rejection Rate) measure? A: The probability that a legitimate/authorized user will be incorrectly rejected by the biometric system.

Q: What does FAR (False Acceptance Rate) measure? A: The probability that an unauthorized user will be incorrectly accepted by the biometric system.

Q: Which rate should be minimized to prevent unauthorized access? A: FAR (False Acceptance Rate) should be kept as low as possible to prevent unauthorized users from gaining access.

Q: If FRR is high, what is the potential consequence? A: A high FRR means legitimate users are frequently denied access, leading to inconvenience and frustration.

Q: If FAR is high, what is the potential consequence? A: A high FAR means unauthorized users can easily gain access, compromising the security of the system.

Q: In a biometric system, which rate represents a false positive? A: FAR (False Acceptance Rate) represents a false positive, where an unauthorized user is incorrectly accepted as legitimate.

Q: In a biometric system, which rate represents a false negative? A: FRR (False Rejection Rate) represents a false negative, where a legitimate user is incorrectly rejected.

Q: When implementing a biometric system, which rate should take priority for high-security environments? A: Minimizing FAR should take priority to prevent unauthorized access, even if it means a slightly higher FRR.