Network Defense Essentials (NDE) 2026 – 400 Free Practice Questions to Pass the Exam

Single sign-on (SSO) authentication is a method that allows users to access multiple applications or services using a single set of credentials, such as a username and password. In the context of Apple application services, SSO enables users to log in once and gain access to various applications without needing to re-enter their credentials for each individual service. This streamlines the user experience and enhances security by minimizing the number of times users must provide their login information, reducing the likelihood of password fatigue and potentially insecure password practices.

Biometric authentication involves methods such as fingerprint or facial recognition but does not inherently link multiple services with a single ID. Password authentication simply refers to the process of logging in using a username and password for each service, which does not provide the convenience of accessing multiple services at once. Two-factor authentication adds an extra layer of security by requiring a second form of verification after the initial login but does not allow access to multiple services with a single ID on its own. Therefore, single sign-on authentication is the most suitable answer for this context.