A number of virtual machines in a vSphere 5.5 DRS cluster are connected to the same
virtual switch port group. After several of these VMs are migrated to another host, an
administrator notices that they have lost network connectivity. The Events tab in vCenter
Server shows this error message: Failed to initialize ethernet0. The vmkernel log file on the
host running the affected VMs contains this message: Can’t connect device:’port group
name’: Out of resources. Which caused this issue?

A.
The virtual switch port allocation was changed from the default setting.

B.
Network I/O Control was enabled.

C.
There were insufficient uplinks configured on the virtual switches.

D.
The DRS cluster containing the VMs was set to Fully Automated with the Migration
Threshold set to Conservative.