Which of the following is a digital certificate that allows single sign-on to be used on both SAP and non-SAP applications? Please choose the correct answer.

Question

Options

• AX.509
• BSAML 2.0
• CSPNEGO
• DKerberos

• A
  90% (46)
• B
  2% (1)
• C
  6% (3)
• D
  2% (1)

Explanation

X.509 is correct because it is literally a digital certificate standard - the question's phrasing is the key clue. X.509 defines the format for public key certificates used in PKI, and SAP natively supports X.509 certificates for SSO across both its own applications and third-party systems.

Why the distractors are wrong:

• SAML 2.0 is an XML-based protocol/framework for exchanging authentication assertions - not a certificate itself (though it may use X.509 certificates internally).
• SPNEGO is a negotiation mechanism that helps clients and servers agree on an authentication method; it is not a certificate.
• Kerberos is a network authentication protocol that issues tickets, not certificates, and is primarily domain-bound rather than cross-platform SSO.

Memory tip: Anchor on the word "certificate" in the question. Of the four options, only X.509 is a certificate - the others are protocols or mechanisms. Think: "X marks the cert."

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