In Synchronous dynamic password tokens: 

Answer options:

A. The token generates a new password value at fixed time intervals (this password could be based on the time of day encrypted with a secret key).
B. The token generates a new non-unique password value at fixed time intervals (this password could be based on the time of day encrypted with a secret key).
C. The unique password is not entered into a system or workstation along with an owner`s PIN.
D. The authentication entity in a system or workstation knows an owner`s secret key and PIN, and the entity verifies that the entered password is invalid and that it was entered during the invalid time window.

A

Synchronous dynamic password tokens: - The token generates a new password value at fixed time intervals (this password could be the time of day encrypted with a secret key). - the unique password is entered into a system or workstation along with an owner`s PIN. - The authentication entity in a system or workstation knows an owner`s secret key and PIN, and the entity verifies that the entered password is valid and that it was entered during the valid time window. Source: KRUTZ, Ronald L. & VINES, Russel
D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 37.