Contoso, Ltd. plans to use Office 365 for email services and Lync Online. Contoso has four unique
domain names.
You need to migrate domain names to Office 365.Which two domain names should you exclude from the migration? Each correct answer presents part of
the solution.

A.
contoso.us

B.
contoso

C.
contoso.local

D.
contoso.co

Explanation:
contoso.us – valid TLD Domain
contoso.co – valid TLD Domain
contoso – single labeled domain – not valid
contoso.local – internal labeled domain – not valid