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 need to ensure that User1 can manage the group membership of Group1. The solution must minimize the number of permissions assigned to User1. Which cmdlet should you run?（）

多项选择题 Your network contains an Active Directory domain named contoso.com. You have a DHCP server named Server1 that runs Windows Server 2008. You install Windows Server 2012 R2 on a server named Server2. You install the DHCP Server server role on Server2. You need to migrate the DHCP services from Server1 to Server2. The solution must meet the following requirements: Ensure that existing leases are migrated. Prevent lease conflicts. Which three actions should you perform?（）

单项选择题 Your network contains an Active Directory domain named contoso.com. The domain contains a domain controller named DC1 that hosts the primary DNS zone for contoso.com. All client computers are configured to use DC1 as the primary DNS server. You need to configure DC1 to resolve any DNS requests that are not for the contoso.com zone by querying the DNS server of your Internet Service Provider (ISP). What should you configure?（）