Exam MS-100 topic 3 question 48 discussion

HOTSPOT -
Your network contains an on-premises Active Directory forest named contoso.com. The forest contains the users shown in the following table.

You create an Azure Active Directory (Azure AD) tenant named fabrikam.onmicrosoft.com.
You plan to sync the users in the forest to fabrikam.onmicrosoft.com by using Azure AD Connect.
Which username will be assigned to User1 and User2 in Azure AD after the synchronization? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

Suggested Answer:
If you added the contoso.com and east.contoso.com domains as custom domains in Microsoft 365, then the users would be assigned their user principle names as Microsoft 365 usernames.
However, the question does not state that you have added the domains as custom domains. Therefore, both users will use the default
@fabrikam.onmicrosoft.com domain for their usernames.