Explanation/Reference:
Explanation:
Scenario: The NorthRide app must use an additional level of authentication other than the employee's

password.
Azure Multi-Factor Authentication is the multi-factor authentication service that requires users to also

verify sign-ins using a mobile app, phone call or text message. It is available to use with Azure Active Directory, to secure on-premise resources with the Azure Multi-Factor Authentication Server, and with custom applications and directories using the SDK.
Incorrect answers:
A: Azure Active Directory Basic does not support multi-factor authentication. Azure Active Directory Premium is required.
References:
https://azure.microsoft.com/en-us/documentation/articles/multi-factor-authentication/ Azure Active Directory Pricing
http://azure.microsoft.com/en-gb/pricing/details/active-directory/