NetworkThe software virtualization systems are first of all the client-server applications. That is why the interaction with the network is inevitable.Very often, for a full-fledged testing of the virtualization systems, we need to create a separate test sub-network with a domain controller and several computers added to this domain.It is enough to have one separate small-capacity computer as a domain controller. We can install several systems on it and in such way test our system for the compatibility with different operating systems on the domain controller (usually, these are Windows 2003/2008/2008R2 server operating systems).You should install the following roles on the domain controller:Active Directory Domain Services;DHCP;DNS.You need to configure the gateway to get access to the Internet from the local network. So, you need a switch and several network cables for the network configuration.