An administrator of a Provisioning services environment notices that several of the target devices that are configured to use a vDisk on the provisioning server are randomly failing to start and shut down. What should the administrator check to prevent this issue from occurring?
A. The SOAP Service is running.
B. High availability is enabled on the vDisks.
C. The target devices are configured to start up from hard disk.
D. All network switch ports have spanning tree protocol disabled.