Network Defense Essentials (NDE) 2025 – 400 Free Practice Questions to Pass the Exam

The correct answer, biometric authentication, pertains to authentication methods that leverage unique biological traits of an individual. Facial recognition technology falls under this category because it analyzes facial features and characteristics to verify an individual's identity. This method is distinct from traditional forms of authentication, such as passwords or PINs, because it relies on physical characteristics that are inherently unique to each person.

Biometric authentication is increasingly employed in security systems due to its convenience and the difficulty of spoofing biometric traits compared to other authentication methods. In contrast, smart card authentication involves physical cards that may contain embedded security credentials, which is not relevant in Jack's implementation since it is based on facial recognition.

Two-factor authentication combines two different forms of verification, which could include a password and a biometric measure, but since the question specifically refers to a system using only facial recognition, it does not fit the criteria for two-factor authentication.

Behavioral authentication monitors patterns of user behavior, such as how one types or moves the mouse, which is also not applicable here as the focus is strictly on facial recognition. Thus, the identification of facial recognition technology fitting into biometric authentication solidifies its correct classification in the context presented.