What command should you run?

Explanation/Reference:
The Get-OrganizationConfig cmdlet is used to get configuration data for an Exchange organization.
We should specify DC2 as we are interested if information from EX1 is propagated to DC2.
Example: This example gets the organization configuration information for the domain controller ContosoDC.
Get-OrganizationConfig -DomainController ContosoDC
Incorrect answers:
Not Get-ExchangeServer: The Get-ExchangeServer cmdlet is used to obtain the attributes of a specified Exchange server, but we are not interested in the attributes of EX1, we want to know if EX1 propagates changes to DC2.
Not Get-DomainController: The Get-DomainController cmdlet is used to view a list of domain controllers that exist in your organization, but we are interested in Active Directory information not a list of the Domain controllers.
Not Get-AddServerSettings: The Get-AdServerSettings cmdlet is used to view the Active Directory Domain Services (AD DS) environment settings in the current Windows PowerShell session, but we are not interested in PowerShell sessions.
Reference: https://technet.microsoft.com/en-us/library/aa997571%28v=exchg.150%29.aspx