You have an on-premises Active Directory forest.
You deploy Active Directory Federation Services (AD FS) and purchase an Office 365 subscription.
You need to create a trust between the AD FS servers and the Office 365 subscription.
Solution: You run the netdom.com command.
Does this meet the goal? single sign-on domain from a standard domain. Adding or converting a domain sets up a trust between AD FS and Microsoft Azure Active Directory (Microsoft Azure AD).

A.
Yes

B.
No

Explanation:

Each domain that you want to federate must either be added as a single sign-on domain or converted to be a
References: https://msdn.microsoft.com/en-us/library/azure/jj205461.aspx