HOTSPOT
You have an Exchange Server 2013 organization named contoso.com. Your company,
which is named Contoso, Ltd., has a partnership with another company named Fabrikam,
Inc. Fabrikam has an Exchange Server 2013 organization.
Both organizations have a federation trust to the Microsoft Federation Gateway. You need to
ensure that the users at Fabrikam can see the free/busy information of the users at Contoso,
including the time, the location, and the subject of appointments. Which command should
you run? (To answer, select the appropriate options in the answer area.)
Answer: 
Explanation:
https://technet.microsoft.com/en-us/library/dd351221%28v=exchg.150%29.aspx
Get-FederationInformation -DomainName fabrikam.com | New-OrganizationRelationship -FreeBusyAccessEnabled -FreeBusyAccessLevel LimitedDetails
From contoso’s perspective.
https://technet.microsoft.com/en-us/library/ee332357(v=exchg.150).aspx
Isn’t this question saying that you are contoso and your partner is Fabrikam? So from Contoso’s point of view, should you do:
Get-FederationInformation -DomainName fabrikak.com rather than Get-FederationInformation -DomainName contoso.com?
Why would you want to Get-FederationInformation about yourself….
https://technet.microsoft.com/en-us/library/ee332357(v=exchg.150).aspx
In this link contoso is the partner, but in the question above fabrikam is the partner, thus right is: Get-FederationInformation -DomainName fabrikak.com
100% correct answer is Get-FederationInformation -DomainName fabrikak.com
Read from : Step Two– Setup the On-Premise Organization Relationship
On Premises: rootuk.net (Contoso)
Outlook Live: test.rootuk.net ( fabrikam )
http://www.stevieg.org/2010/08/federation-onpremise-outlooklive/
http://i1.wp.com/www.stevieg.org/wp-content/uploads/image176.png
If you like the above information, download latest O365 Migration guide:
https://gallery.technet.microsoft.com/office/Exchange-on-premises-to-645ecb1a/file/143750/1/O365_technet.pdf