Network Defense Essentials (NDE) Practice Exam

Which type of authentication identifies human characteristics for user verification?

1. Token-based authentication

2. Password authentication

3. Biometric authentication

4. Smart card authentication

The correct answer is: Biometric authentication

Biometric authentication is the correct answer because it relies on identifying unique physical or behavioral characteristics of individuals for user verification. This method utilizes traits such as fingerprints, facial recognition, iris patterns, voice recognition, or even behavioral biometrics like typing rhythm. The fundamental principle behind biometric authentication is that these characteristics are inherently linked to the individual, making it a strong form of security that is difficult to replicate or forge. By leveraging these unique human attributes, biometric systems can provide a high level of assurance regarding the identity of a user. This is particularly beneficial in environments where secure access is critical, as it reduces the risk of unauthorized access that can occur with traditional methods like passwords or tokens. Moreover, biometric authentication often streamlines the user experience since individuals do not need to remember passwords or carry physical tokens; they simply present their unique biological traits.