SSCP · Question #1160
Digital Certificates use which protocol?
The correct answer is C. X.509. Digital certificates, specifically those used in Public Key Infrastructure (PKI) for authentication and encryption, adhere to the X.509 standard.
Question
Digital Certificates use which protocol?
Options
- AX.400
- BX.500
- CX.509
- DX.511
- EX.525
- FNone of the above
How the community answered
(26 responses)- B4% (1)
- C85% (22)
- E4% (1)
- F8% (2)
Why each option
Digital certificates, specifically those used in Public Key Infrastructure (PKI) for authentication and encryption, adhere to the X.509 standard.
X.400 is a standard for message handling systems (email).
X.500 is a standard for directory services, often used in conjunction with X.509 but not the certificate format itself.
X.509 is the internationally recognized ITU-T standard that defines the format of public key certificates, which are central to PKI systems for verifying the authenticity of digital identities.
X.511 is a standard related to directory information models.
X.525 is a standard related to directory replication.
X.509 is the correct standard for digital certificates.
Concept tested: X.509 digital certificate standard
Source: https://learn.microsoft.com/en-us/windows/win32/seccrypto/x-509-certificates
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