单项选择题
A.Uninstall and reinstall the DNS service on server2.
B.Change all the DNS zones on server2 to stub zones.
C.Disable and then enable the DNS service on server2.
D.Delete the na.contoso.com DNS zone domain from server2. Restart the DNS service on server2.
单项选择题 Your network consists of single active domain. The domain contains a serve named server1 that runs windows server 2008 all client computers run windows vista. All computers are members of the active directory domain. You assign the secure server (Require Security) IPsec policy to server1 by using a GPO. Users report that they fail to connect to server1. You need to ensure that users can connect to server1. All connections to server1 must be encrypted. What should you do?（）
单项选择题 Your network contains a single Active Directory domain named contoso.com.The domain contains a DNS server named Server1 that hosts the contoso.com zone.The network is connected to the network of a partner company. The partner companys network contains a DNS server that hosts a zone named nwtraders.com.You need to ensure that computers in contoso.com can resolve the names of computers in nwtraders.com.The solution must not require any changes to the zone configuration of nwtraders.com.What should you configure on Server1？（）
单项选择题 Your company has multiple DNS servers in the main office. You plan to install DNS on a member server in a branch office. You need to ensure that the DNS server in the branch office is able to query and DNS server in the main office, and you need to limit the number of DNS records that are transferred to the DNS server in the branch office. What should you do?（）