Network Defense Essentials (NDE) Practice Exam

What authentication method allows users to access services using their Google account?

1. Single sign-on authentication

2. Two-factor authentication

3. Biometric authentication

4. Smart card authentication

The correct answer is: Single sign-on authentication

Single sign-on authentication enables users to access multiple services and applications by using a single set of login credentials, such as a Google account. This method simplifies the user experience by allowing individuals to log in once and gain access to various platforms without needing to remember multiple passwords. In the case of Google accounts, users can authenticate themselves across various third-party services that support Google's authentication mechanism. This not only provides convenience but also enhances security, as users rely on Google's robust security measures instead of managing their own credentials for each service. While two-factor authentication adds an additional layer of security by requiring a second form of verification beyond just a password, it doesn't inherently allow for the single sign-on experience. Biometric authentication relies on unique biological traits for identity verification, and smart card authentication involves physical devices for access. Neither of these methods directly relates to using a Google account to access services, making single sign-on the clear correct answer in this context.