Question 99

Explanation

The correct answer: Security Assertion Markup Language (SAML) is an XML-based standard for exchanging authentication and authorization data between parties. It helps in establishing trust among different domains by allowing them to share authentication tokens. SAML is crucial in federated identity management as it enables businesses to securely pass user authorization and authentication data between identity providers and service providers, reducing the need for passwords and simplifying the user experience. Its capability for asserting and managing identities across various systems makes it the primary recommendation in this context. The incorrect answers: OAuth is a widely used protocol for delegated authorization (giving another entity permission to act on your behalf), but it does not provide a comprehensive solution for managing identities across distinct systems. It is more focused on allowing applications to use services with the permission of the user, and less on the assertion of identity and access control, which is the main concern in a federated identity management scenario. OpenID is another technology that can be used for single sign-on and allowing users to use an existing account to sign in to multiple websites, without needing to create new passwords. But, OpenID is more about enabling individuals to control how their online identity is shared amongst the websites they visit and less about asserting and managing identities across various systems in an enterprise context. Single sign-on (SSO) can certainly streamline the authentication process by allowing a user to log in once and gain access to different systems without being prompted to log in again, but it's just a subset of federated identity, and its use is primarily focused on the authentication and technical interoperability, not the comprehensive identity and access control needed in a federated identity management system.