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Which of the following type of authentication mechanism…

An organization has introduced token-based authentication to system administrators due to risk of password
compromise. The tokens have a set of numbers that automatically change every 30 seconds. Which of the
following type of authentication mechanism is this?

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A.
TOTP

B.
Smart card

C.
CHAP

D.
HOTP

Explanation:
Time-based one-time password (TOTP) tokens are devices or applications that generate passwords at fixed
time intervals. In this case, it’s every 30 seconds.

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