Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 （SP2）.A firewall separates the internal network from the Internet. 
The firewall blocks all outbound traffic except for HTTP and SMTP traffic.You install a DNS server. The DNS server is configured to use the default root hints. You need to ensure that the DNS server can resolve the host names on the Internet. 
Which port should you open on the firewall？（）

Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 （SP2）. You have a DNS server named Server1 that hosts a primary zone for the domain. You have a DNS server named Server 2 that hosts a secondary zone for the domain. 
You discover that the resource records on Server2 are different from the resource records on Server1. You need to ensure that the resource records are the same on Server1 and Server2. 
What should you do？（）

You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 （SP2）. You have two Web servers named Server2 and Server3. 
The Web servers host an internal Web site that will be accessed by the URL http：//www.contoso.com. You need to ensure that requests for www.contoso.com are distributed between Server2 and Server3. 
What should you do？（）

You have 10 DNS servers that run Windows Server 2003 Service Pack 2 （SP2）. You need to automate the management of the DNS server. 
Which tool should you use？（）