HOTSPOT
You federate your on-premises Active Directory with Azure Active Directory (Azure AD) by using Active
Directory Federations Services (AD FS) 2.0. You plan to secure cloud and on-premises resources by using an
Azure Multi-Factor Authentication (MFA) server. You install the MFA server on the AD FS proxy server. You
configure the MFA server and successfully import all AD users into the MFA user database.
Development teams in your organization must be able to secure their non-browser based apps.
You need to document the authentication mechanisms.
For each requirement, which authentication mechanism is used. To answer, select the appropriate
authentication mechanism from each list in the answer area.
Hot Area:
Answer: 
Explanation:
Securing Azure AD resources using Azure MFA
First factor: performed on-premises using AD FS.
Second factor: phone-based method carried out using cloud authentication.
Securing Azure AD resources using Active Directory FS
First factor: performed on-premises using AD FS.
Second factor: performed on-premises by honoring the claim.https://docs.microsoft.com/en-us/azure/multi-factor-authentication/multi-factor-authentication-get-started-adfs