Certified Information Systems Security Professional (CISSP) — Question 97

What physical characteristic does a retinal scan biometric device measure?

Answer options

• A. The amount of light reflected by the retina
• B. The pattern of blood vessels at the back of the eye
• C. The size, curvature, and shape of the retina
• D. The pattern of light receptors It the back of the eye

Correct answer: B

Explanation

The correct answer is B because retinal scans specifically analyze the unique pattern of blood vessels in the retina, which is crucial for biometric identification. Options A, C, and D do not represent the primary function of retinal scans, as they focus on different aspects that are not utilized for biometric verification.