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Exam CISSP topic 1 question 329 discussion

Actual exam question from ISC's CISSP
Question #: 329
Topic #: 1
[All CISSP Questions]

What physical characteristic does a retinal scan biometric device measure?

  • 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
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Suggested Answer: B 🗳️

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Soleandheel
11 months, 2 weeks ago
B. The pattern of blood vessels at the back of the eye. Retinal scanning technology identifies individuals based on the unique patterns of blood vessels in the retina, which are located at the back of the eye. This pattern is highly unique for each person and remains stable over time, making it suitable for biometric authentication.
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Ivanchun
1 year, 11 months ago
Selected Answer: B
B, blood vessels
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jackdryan
1 year, 6 months ago
B is correct
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rdy4u
2 years ago
Selected Answer: B
The retina, a thin nerve (1/50th of an inch) on the back of the eye, is the part of the eye which senses light and transmits impulses through the optic nerve to the brain - the equivalent of film in a camera. Blood vessels used for biometric identification are located along the neural retina, the outermost of retina's four cell layers. The following reference(s) were/was used to create this question: Reference: Retina Scan Technology. ISC2 Official Guide to the CBK, 2007 (Page 161)
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