单项选择题 Your company has a server named Server1 that runs Windows Server 2008 R2. Server1 runs the DHCP Server server role and the DNS Server server role. You also have a server named ServerCore that runs a Server Core installation of Windows Server 2008 R2. All computers are configured to use only Server1 for DNS resolution. The IP address of Server1 is 192.168.0.1. The network interface on all the computers is named LAN. Server1 is temporarily offline. A new DNS server named Server2 has been configured to use the IP address 192.168.0.254.You need to configure ServerCore to use Server2 as the preferred DNS server and Server1 as the alternate DNS server. What should you do？（）

多项选择题 Your company has a single Active Directory domain. The company has a main office and three branch offices. The domain controller in the main office runs Windows Server 2008 R2 and provides DNS for the main office and all of the branch offices. Each branch office contains a file server that runs Windows Server 2008 R2.Users in the branch offices report that it takes a long time to access network resources. You confirm that there are no problems with WAN connectivity or bandwidth.You need to ensure that users in the branch offices are able to access network resources as quickly as possible. Which two actions should you perform？（）

单项选择题 Your company has a single Active Directory domain. The company has a main office and a branchoffice. Both the offices have domain controllers that run Active Directory-integrated DNS zones. All client computers are configured to use the local domain controllers for DNS resolution. The domain controllers at the branch office location are configured as Read-Only Domain Controllers (RODC).You change the IP address of an existing server named SRV2 in the main office. You need the branch office DNS servers to reflect the change immediately. What should you do？（）