Client Certificate URL extension

Target entity: Client Certificate URL extension
Context triple: [RFC 3546, defines, Client Certificate URL extension]

• A. X.509 certificates
  X.509 certificates are digital documents that bind a public key to an entity’s identity using a trusted certificate authority, forming the basis of public key infrastructure for secure communications.
• B. SSL
  SSL (Secure Sockets Layer) is a cryptographic protocol designed to provide secure, encrypted communication over a computer network, commonly used to protect data transmitted between clients and servers.
• C. RFC 2818
  RFC 2818 is the Internet standard that specifies how HTTP is used over TLS/SSL, defining the HTTPS protocol and its security requirements.
• D. Active Directory Certificate Services
  Active Directory Certificate Services is a Windows Server role that provides public key infrastructure (PKI) functionality for issuing, managing, and validating digital certificates within an organization’s network.
• E. Let’s Encrypt
  Let’s Encrypt is a free, automated, and open certificate authority that provides TLS/SSL certificates to enable secure HTTPS connections for websites worldwide.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Client Certificate URL extension
Target entity description: The Client Certificate URL extension is a Transport Layer Security (TLS) mechanism that allows a client to provide a URL from which its certificate can be retrieved, rather than sending the certificate directly in the handshake.

• A. X.509 certificates
  X.509 certificates are digital documents that bind a public key to an entity’s identity using a trusted certificate authority, forming the basis of public key infrastructure for secure communications.
• B. SSL
  SSL (Secure Sockets Layer) is a cryptographic protocol designed to provide secure, encrypted communication over a computer network, commonly used to protect data transmitted between clients and servers.
• C. RFC 2818
  RFC 2818 is the Internet standard that specifies how HTTP is used over TLS/SSL, defining the HTTPS protocol and its security requirements.
• D. Active Directory Certificate Services
  Active Directory Certificate Services is a Windows Server role that provides public key infrastructure (PKI) functionality for issuing, managing, and validating digital certificates within an organization’s network.
• E. Let’s Encrypt
  Let’s Encrypt is a free, automated, and open certificate authority that provides TLS/SSL certificates to enable secure HTTPS connections for websites worldwide.
• F. None of above. chosen