Which statement is true about certificate mapping?

The correct statement regarding certificate mapping is that it links certificates to specific users or machines. This process is essential in environments that utilize digital certificates for authentication because it establishes a direct association between the certificate (which serves as proof of identity) and the user or device that the certificate represents. This binding ensures that only authorized entities can utilize the credentials afforded by the certificate to access resources.

In many systems, certificate mapping can streamline access controls by linking a digital certificate to a user account within a directory service. This can facilitate efficient user management and enhance security by ensuring that certificates are used only by the individuals or devices to whom they are assigned.

The other statements do not accurately reflect the nature of certificate mapping. Ensuring compatibility with all devices is related to certificate formats and standards rather than mapping. Preventing the revocation of valid certificates involves different processes within certificate lifecycle management. Automatically issuing certificates without approval would be a security risk and is not typically a function of certificate mapping, which relies on established relationships and approvals to maintain integrity in authentication.