What additional verification is performed by the LRA/TA besides the subscriber's identity?

The correct choice indicates that the Local Registration Authority (LRA) or Trusted Authority (TA) conducts several layers of verification beyond just confirming the subscriber's identity. This added level of scrutiny ensures that all necessary characteristics and qualifications of the individual requesting a digital certificate are thoroughly assessed before any certificate is issued.

SIPRNet AD Account verification involves checking the Active Directory account associated with the Secure Internet Protocol Router Network, confirming that the individual has legitimate access to secure communications. Security Clearance verification confirms that the subscriber has been vetted and granted permission to access classified information, which is paramount in environments where sensitive data is handled. Lastly, the verification of a SIPRNet Account ensures that the individual has a valid and operational account on SIPRNet, which is essential for conducting secure communications.

By performing these verifications in addition to the identity check, the LRA or TA significantly enhances the security posture of the PKI environment, ensuring that only authorized individuals can obtain and use digital certificates for secure communications. This comprehensive approach helps mitigate the risks of identity fraud and improves overall trust in the PKI system.