Comprehensive and Detailed Explanation From Exact Extract:
Authenticator apps, such as Google Authenticator or Microsoft Authenticator, can be configured to sendpush notificationsto users for approval when logging in. This is a form of multi-factor authentication.
FromAll-in-One Exam Guide:
“Push-based two-factor authentication uses an authenticator app to send a notification to a mobile device. The user must approve the login attempt in real time, ensuring the request is valid.”
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