You host 16 virtual machines that are distributed evenly across an 8-node Windows Server
2008 R2 Hyper-V failover cluster. You plan to perform live migrations of the VMs to prepare
for the installation of software updates on the cluster. You need to perform the maximum
number of simultaneous live migrations. How many live migrations should you perform
simultaneously?

A.
one

B.
two

C.
eight

D.
four

Explanation:
One live migration can be active between any two cluster nodes at any time. This means
that a cluster will support number_of_nodes/2 simultaneous live migrations. For example, a

16-node cluster will support 8 simultaneous live migrations with no more than one live
migration session active from every node of the cluster.