Your network contains five physical servers.
The servers are configured as shown in the following table.
All servers run Windows Server 2012 R2.
During the setup of VMM, you configure distributed key management.
You need to ensure that the entire VMM infrastructure can be restored.
What should you include in the backup plan? To answer, select the appropriate server to back up for each backup content type in the answer.
Hot Area:
Answer: 
Correct.
Keys are stored in AD; VMM config in SQL DB and templates, profiles etc in VMM library server.
https://technet.microsoft.com/en-us/library/gg697604(v=sc.12).aspx
https://technet.microsoft.com/en-us/library/bb740883.aspx
Requirements:
You need to ensure that the entire VMM infrastructure can be restored.
Possible solution:
In case of VMM restoration, Server1 will be reinstalled from SCVMM DVD/ISO. Therefore, if only 3 servers are allowed to be backed up, they should be DC1, SQL1 and Server2