Essentials is the edition of windows server 2012 cares 25 or less employers and routinely arranges the situation as a root domain controller. In addition to windows server, a network interface is composed of two parts which is the network interface card hardware and device drivers. Dynamic host configuration protocol server is not a service supported by 8.1 and 4 terabytes is the random access memory that can be installed in their data center or standard editions of windows server 2012. Hyper visor is the term used to describe the virtualization software component that creates and monitors the virtual hardware environment.