Which of the following is an example of a multifactor authentication?
A. Password and PIN
B. Smart card and PIN
C. Smart card and USB drive
D. Iris scan and retina scan
Answer: B
Explanation: Multifactor authentication involves using more than one factor (authentication method) for authentication. Passwords and PIN, smart cards and USB drives, and iris and retina scans represent a single factor. Smart card and PIN involves two factors: something you have and something you know.
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