A systems administrator needs to configure the company's web server to authenticate using PKI certificates.
Which of the following servers would be queried to validate user credentials?
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A. B. C. D. E.C.
The correct answer to this question is C. Certificate Authority.
When a user attempts to authenticate using PKI certificates, the web server needs to verify the authenticity of the user's certificate. The web server achieves this by querying the Certificate Authority (CA) server that issued the user's certificate.
A Certificate Authority is a trusted third-party entity that issues digital certificates. The certificates contain the public key of the entity being certified and are used to verify the identity of the entity. The CA server validates the identity of the entity before issuing the certificate and signs the certificate using the CA's private key. The web server can then use the CA's public key to verify the signature on the user's certificate and authenticate the user.
Therefore, in this scenario, the web server would query the Certificate Authority server to validate user credentials. The other options, such as the DHCP server, DNS server, ACL on the web server, and LDAP server, do not have the necessary functionality to validate user credentials using PKI certificates.