Todd has been asked by the security officer to purchase a counter-based authentication system.
Which of the following best describes this type of system?
A . A biometric system that bases authentication decisions on behavioral attributes.
B . A biometric system that bases authentication decisions on physical attributes.
C . An authentication system that creates one-time passwords that are encrypted with secret keys.
D . An authentication system that uses passphrases that are converted into virtual passwords.
Answer: C