Drag and Drop Question
You have an Exchange Server 2016 organization. The organization contains five servers. The
servers are configured as shown in the following table:
EXOI, EX02, EX03, and EX04 are members of a database availability group (DAG) named DAG01.
The data center in New York fails. You need to activate DAG01 in the London site. Which three
commands should you run in sequence? To answer, move the appropriate commands from the list
of commands to the answer area and arrange them in the correct order
Answer: 
1.
Set-Service -Name clussvc -ComputerName EX03 -Status Stopped
Set-Service -Name clussvc -ComputerName EX04 -Status Stopped
2.
Stop-DatabaseAvailabilityGroup -identity DAG01 -ActiveDirectorySite “New York” -ConfigurationOnly $TRUE
3.
Restore-DatabaseAvailabilityGroup -Identity DAG01 -ActiveDirectorySite “London” -AlternateWitnessServer SRV02 -AlternateWitnessDirectory D:\DAG1
I agree that the clussvc should be stopped on ex03/04 but I think it is
1) Stop-DatabaseAvailabilityGroup -identity DAG01 -ActiveDirectorySite “New York” -ConfigurationOnly $TRUE
2) Stop clussvc on ex03/04
3) Restore-DatabaseAvailabilityGroup -Identity DAG01 -ActiveDirectorySite “London” -AlternateWitnessServer SRV02 -AlternateWitnessDirectory D:\DAG1
https://blogs.technet.microsoft.com/timmcmic/2013/08/18/part-8-datacenter-activation-coordination-stop-in-the-name-of-dag/