CompTIA Security+ (SY0-501) — Question 521

A company recently installed fingerprint scanners at all entrances to increase the facility's security. The scanners were installed on Monday morning, and by the end of the week it was determined that 1.5% of valid users were denied entry. Which of the following measurements do these users fall under?

Answer options

• A. FRR
• B. FAR
• C. CER
• D. SLA

Correct answer: A

Explanation

The users who were denied entry despite being valid are categorized under False Rejection Rate (FRR), which measures the percentage of legitimate users incorrectly denied access. The other options do not apply here: False Acceptance Rate (FAR) refers to unauthorized users gaining access, Crossover Error Rate (CER) represents the point where FRR and FAR are equal, and Service Level Agreement (SLA) pertains to the expected service performance metrics.