Strong Authentication primarily ensures what security outcome?

• A. Use multi-factor methods to secure access.
• B. Restrict access to essential job functions.
• C. Prepare for quick action during security breaches.
• D. Catalog applications, systems, and user roles.

Answer: (A)

Strong authentication focuses on proving a user’s identity with multiple independent factors before granting access. By requiring more than one factor—such as something you know (a password), something you have (a token or mobile device), or something you are (biometrics)—it greatly reduces the chance that an attacker can impersonate a user, even if one factor is compromised. This directly leads to securing access to resources, which is the core security outcome here. The other options describe how access is scoped (based on job functions), how incidents are handled, or how assets and roles are cataloged—important activities, but not the primary aim of strengthening authentication.