单项选择题 Your network contains an Active Directory domain named contoso.com.   You  plan  to  deploy  a  child  domain  named  sales.contoso.com.  The  domain  controllers  in sales.contoso.com will be DNS servers for sales.contoso.com.   You need to ensure that users in contoso.com can connect to servers in sales.contoso.com by using fully  qualified domain names （FQDNs）.   What should you do（）

单项选择题 You need to force a domain controller to register all service location （SRV） resource records in DNS.   Which command should you run（）

单项选择题 Your network contains an Active Directory domain named contoso.com.  You remove several computers from the network.   You need to ensure that the host （A） records for the removed computers are automatically deleted from  the contoso.com DNS zone.  What should you do（）