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?
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.