单项选择题
A.Add a mail exchange (MX) record for server2.
B.Add a mailbox (MB) record for server2. Set the mailbox host setting to server2.
C.Add a canonical (CNAME) record that maps server2 to contoso.com.
D.Add a server locator (SRV) record for server2. Set the service field to _smtp. Set the protocol field to _tcp. Set the port number to 25.
单项选择题 Your network contains an Active Directory forest. The functional level of the forest is Windows Server 2008 R2.You plan to deploy DirectAccess.You need to configure the DNS servers on your network to support DirectAccess.What should you do？（）
多项选择题 Your company has a network that has an active directory domain. The domain has two servers named DC1 and DC2. You plan to collect events from DC2 and transfer them to DC1. You configure the required subscriptions subscriptions by selecting the normal option for the event delivery optimization setting and using the HTTP protocol . you discover that none of the subscriptions work. You need to ensure that the servers support event collections, which three actions should you perform? （）
多项选择题 our company has a single active directory forest that has six domains. All DNS servers in the forest run windows serve 2008. You need to ensure that all public DNS queries are channeled though a single-caching-only DNS server.Which two actions should you perform? （）