HOTSPOT
You have a Hyper-V host named Server1 that runs Windows Server 2012 R2. Server1 hosts 40 virtual
machines that run Windows Server 2008 R2. The virtual machines connect to a private virtual switch.
You have a file that you want to copy to all of the virtual machines.
You need to identify to which servers you can copy files by using the Copy-VmFile cmdlet.
What command should you run? To answer, select the appropriate options in the answer area.
Answer: 
almost correct
Get-VMIntegrationService 🙂
useful info here https://virtuallyaware.wordpress.com/2014/04/14/powershell-snip-of-the-week-get-vmintegrationservice/
this should help clarify things a little more
https://rlevchenko.com/tag/guest-service-interface/
Check out here
http://www.altaro.com/hyper-v/using-powershell-manage-utilize-hyper-v-integration-services-server-2012-r2/