Your network consists of a single Active Directory domain.You have a DHCP server that runs Windows Server 2003 Service Pack 2 （SP2）. All client computers run Windows XP Service Pack 3 （SP3）.A user named User1 reports that when she starts her computer， she receives a duplicate address error message.You confirm that her computer is configured as a DHCP client.You need to ensure that User1 receives a unique IP address from the DHCP server.
 What should you do on the DHCP server？（）

Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 （SP2）.The network contains two DNS servers named Server1 and Server2. 
You deploy a DHCP server named Server3 and configure all client computers to receive their IP configurations automatically.You discover that all client computers use Server2 for host name resolution.You need to ensure that all client computers use Server1 for host name resolution. 
What should you do？（）