多项选择题 You have a Windows Server 2008 R2 Hyper-V server with two network adapters named Adapter1 and Adapter2. You need to configure the server to host virtual machines （VMs） on different networks. Which two actions should you perform on the host server？（）

单项选择题 YourcompanyhasaMicrosoftHyper-VServer2008R2environment.YoumanagethevirtualenvironmentbyusingMicrosoftSystemCenterVirtualMachineManager（VMM）2008R2.Youarecreatingavirtualtestenvironmentbyinstallingtwochildpartitions.Thetestenvironmentmustbecompletelyisolatedfromallproductionservers.Youneedtoensurethatthechildpartitionscancommunicatewitheachother. Whichconnectiontypeshouldyouconfigure？（）

单项选择题 You have a Windows Server 2008 R2 Hyper-V server with a single network adapter that is connected to a virtual network. The virtual network is configured as External. Virtual machines （VMs） running on the server are not able to communicate with the host server over the network. You need to ensure that VMs running on the server are able to communicate with the host server over the network. In Virtual Network Manager，what should you do？（）