单项选择题 Your network contains an Active Directory domain named contoso.com. The domain contains a member server named Server1 and a domain controller named DC2.All servers run Windows Server 2012 R2. All domain controllers are configured as DNS servers. On Server1, you open Server Manager and you add DC2 as another server to manage. From Server Manager on Server1, you right-click DC2 as shown in the exhibit. (Click the Exhibit button.) You need to ensure that when you right-click DC2, you see the option to run DNS Manager. What should you do?（）

单项选择题 You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Hyper-V server role installed. On Server1, you create a virtual machine named VM1. VM1 has a legacy network adapter. You need to assign a specific amount of available network bandwidth to VM1. What should you do first?（）

单项选择题 Your network contains an Active Directory forest named contoso.com. The forest contains a single domain. The domain contains two domain controllers named DC1 and DC2 that run Windows Server 2012 R2. The domain contains a user named User1 and a global security group named Group1. You reconfigure DC2 as a member server in the domain. You need to add DC2 as the first domain controller in a new domain in the forest. Which cmdlet should you run?（）