Which authentication protocol is commonly used for single sign-on (SSO) in enterprise environments?
- OAuth 2.0
- SAML
- OpenID Connect
- All of these
Answer: All of these
SSO protocols: SAML (XML-based, enterprise SSO), OAuth 2.0 (authorization framework), OpenID Connect (identity layer on OAuth). Often used together: OIDC for user authentication, OAuth for API access delegation. Enables seamless access to multiple applications with one login, improving user experience and security management.