Naomi is choosing between biometric devices to perform iris scans based on vendor claims. Which should be the MOST desirable device? A. The device with the lowest CER. B. The device that rejects the fewest legitimate users. C. The device that accepts the fewest imposters. D. The device that decreases the error rate as the sensitivity increases.

CISSP Certification 2021 practice questions.
Source: https://thorteaches.com/ Free CISSP practice exam questions for the 2021 CISSP exam version.

ANSWER

The right answer is A.

 

 The device with the lowest Crossover Error Rate (CER) is the most desirable. The device that rejects the fewest legitimate users (Type I failure, False Rejection Rate (FRR)) may have a higher Type II failure. The device that accepts the fewest imposters (Type II failure, False Acceptance Rate (FAR)) may have a higher Type I failure. All devices suffer both types of failure; Type II failure decreases the error rate as the sensitivity increases.

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