多项选择题 You are designing a test environment that uses Hyper-V. The test environment must enable testers to perform the following tasks：  Quickly switch between running states.Re-create a specific state or condition.Return the state of the environment to a specific point in time.Recover from a faulty software update by using the fastest method. You need to ensure that the test environment meets the requirements.  What are two possible tools that you can use to achieve this goal？（）

单项选择题 You are designing a Windows Server 2008 R2 Hyper-V environment. You need to be able to dynamically assign new storage to Windows virtual machines （VMs）.  What should you do？（）

单项选择题 You are designing a Windows Server 2008 R2 Hyper-V virtualization environment. Your host servers must have the following elements：  A dedicated management network adapter.A dedicated virtual network for child iSCSI network traffic.A dedicated virtual network for child network traffic with VLAN tagging. You need to choose adapters that minimize the host server processing.  Which adapters should you choose？（）