Question 15

SSO allows a user to authenticate to multiple resources without requiring additional passwords.

Single Sign-On (SSO) is a user authentication process that allows a user to access multiple applications or services with one set of login credentials, thereby eliminating the need to remember and enter multiple passwords.

A) SSO

This option is correct because SSO enables users to log in once and gain access to various applications without needing to enter additional passwords for each one. It streamlines the authentication process, enhancing user experience and security.

B) MFA

Multi-Factor Authentication (MFA) is not correct in this context as it requires users to provide multiple forms of verification, such as a password and a code sent to their phone. While MFA increases security, it does not allow access to multiple resources without additional authentication steps.

C) SAML

Security Assertion Markup Language (SAML) is a framework for exchanging authentication and authorization data between parties, particularly between an identity provider and a service provider. While it facilitates SSO, it does not directly allow users to authenticate without additional passwords; rather, it supports the SSO process.

D) RADIUS

Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) for users who connect to and use a network service. RADIUS itself does not provide SSO capabilities, and typically requires separate credentials for each service.

Conclusion

SSO is definitively the correct answer as it directly addresses the requirement of authenticating to multiple resources without the need for additional passwords. Other options either enhance security through additional authentication steps (MFA) or relate to the authentication process without enabling seamless access to multiple applications (SAML and RADIUS). Thus, only SSO fulfills the condition stated in the question.