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A security administrator is tackling issues related to authenticating users at a remote site. There have been a large number of security incidents that resulted from either tailgating or impersonation of authorized users with valid credentials. The security administrator has been told to implement multifactor authentication in order to control facility access. To secure access to the remote facility, which of the following could be implemented without increasing the amount of space required at the entrance?
Correct Answer: C
Explanation/Reference: Explanation: Authentication systems or methods are based on one or more of these five factors: Something you know, such as a password or PIN Something you have, such as a smart card, token, or identification device Something you are, such as your fingerprints or retinal pattern (often called biometrics) Something you do, such as an action you must take to complete authentication Somewhere you are (this is based on geolocation) Multifactor authentication is authentication that uses two of more of the authentication factors listed above. In this question, we can use voice recognition (something you are) and a one-time PIN token (something you have) to provide two factors of authentication. The one-time PIN token is a small device that generates a one-time PIN to enable access.