单项选择题 Your company has a main office and a branch office. The company network has two WINS servers.You have an application that requires NetBIOS name resolution.The WINS servers are configured as shown in the following table. Location Server name IP address Main office DC1 10.1.0.23 Branch office DC2 10.6.0.254 You discover that the WINS addresses on all client computers in both offices are configured in the following order of use: 10.1.0.23 10.6.0.254 You reconfigure the WINS addresses on all client computers in the branch office in the following order of use: 10.6.0.254 10.1.0.23 After the reconfiguration, users in the branch office are unable to connect to the servers that are located in the main office.You need to restore name resolution in the branch office. What should you do?（）

单项选择题 Your company has two servers that run Windows Server 2008 R2 named Server2 and Server3. Both servers have the DNS Server server role installed. Server3 is configured to forward all DNS requests to Server2. You update a DNS record on Server2. You need to ensure that Server3 is able to immediately resolve the updated DNS record. What should you do？（）

单项选择题 Your company has a single Active Directory forest that has an Active Directory domain named na.contoso.com. A server named Server1 runs the DNS Server server role. You notice stale resource records in the na.contoso.com zone. You have enabled DNS scavenging on Server1. Three weeks later, you notice that the stale resource records remain in na.contoso.com. You need to ensure that the stale resource records are removed from na.contoso.com. What should you do？（）