After providing a username and password, a user must input a passcode from a phone application. Which of the following authentication technologies is used in this example?
This is an example of Multi-Factor Authentication (MFA) because it requires:
Something you know (username/password)
Something you have (a phone-generated passcode)
Breakdown of Options:
A. SSO (Single Sign-On) – Allows one login for multiple services, but does not add a second authentication factor.
B. LDAP (Lightweight Directory Access Protocol) – Used for directory authentication, not MFA.
C. MFA (Multi-Factor Authentication) – ✅ Correct answer. Uses multiple authentication factors for better security.
D. SAML (Security Assertion Markup Language) – Used for federated identity management, not multi-factor authentication.
[Reference:, CompTIA Network+ (N10-009) Official Study Guide – Domain 3.5: Implement authentication and authorization methods., , , , , ]
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