DRAG DROP
You are a database administrator for a Microsoft SQL Server 2012 environment that contains two
SQL Server instances named Server01 and Server02. The Contoso database is located on Server01.
Through database mirroring, a copy of the Contoso database is on Server02.
During the last manual failover of database mirroring, the recovery took longer than usual.
You need to determine where the synchronization bottleneck is for the database mirroring topology.
Which performance counter or counters should you use for each server? (To answer, drag the
appropriate performance counter or counters to their corresponding server or servers in the answer
area. Answer choices may be used once, more than once, or not at all. Answer targets may be used
once or not at all. Additionally, you may need to drag the split bar between panes or scroll to view
content.)
Answer: 
1 – 2
Answer is correct
https://msdn.microsoft.com/en-us/library/ms189931.aspx
Feb 18 2016: Database Mirroring was removed from the 70-462 exam section “Implementing High Availability”.
https://www.microsoft.com/en-ca/learning/exam-70-462.aspx (last paragraph has a link to a Word doc with the details)