Local command prompt. Many of the command-line utilities present in a full installation of Windows Server 2008 also exist in a Core installation. This allows administrators to perform the same tasks using a common toolset.
Terminal Server. Windows Server Core supports Terminal Services Remote Administration mode. Administrators can connect to the Server Core system from another Windows system for administrative purposes. The user experience is identical—the user logging in from the remote system will only get a command prompt in their Remote Desktop session.
Terminal Services Remote Administration is disabled by default, just as it is on a full installation of Windows Server 2008.
WS-Management. Web Services for Management (WS-Management) is a relatively newly defined standard in the IT world. It provides a common method for systems to access and exchange management information across the entire IT infrastructure. Many management tools, including System Center Virtual Machine Manager, use WS-Management to communicate between the client and the server.
Windows Remote Shell. By adding this feature, administrators can execute commands on a Server Core system from another system via the command line. Windows Remote Shell uses WS-Management to pass the commands from one system to another.
From the Windows Server Core system, run the following command:
Now, from a separate Windows Server 2008 or Windows Vista system, you can execute commands against the Windows Server Core system like this:
This generates a directory listing of the remote Windows Server Core system.
Windows Script Host. Windows Server Core includes the cscript.exe application, allowing you to run scripts for administrative purposes. You can write scripts in a variety of different languages—Jscript, VBScript, and so on (providing the scripting engine for that language is installed).
Source of Information : Sybex Windows Server 2008 Hyper-V Insiders Guide to Microsofts Hypervisor