单项选择题
A.Enable aging and scavenging on the contoso.com zone.
B.Convert contoso.com to an Active Directory-integrated zone.
C.From the start of authority （SOA） record for contoso.com， change the refresh interval.
D.From the start of authority （SOA） record for contoso.com， change the TTL For This Record value.
单项选择题 You have a DNS server that runs Windows Server 2003 Service Pack 2 (SP2). You need to prevent the DNS server from resolving host names on the Internet. What should you do?（）
单项选择题 Your network consists of a single Active Directory domain named contoso.com. All servers runWindows Server 2003 Service Pack 2 (SP2). All client computers run Windows XP Professional Service Pack 3 (SP3). You have two DNS servers named DNS1.contoso.com and DNS2.contoso.com. All client computers are configured to use DNS1 as their preferred DNS server and DNS2 as an alternate DNS server. You need to verify that DNS1 is responding to name resolution queries from a client computer. What should you run from the client computer?（）
单项选择题 Your network consists of a single Active Directory domain named contoso.com. All computers are members of the domain. All network servers run Windows Server 2003 Service Pack 2 (SP2). Your company opens a branch office. In the branch office, you deploy a DNS server that hosts a zone named west.contoso.com. You enable dynamic updates on the west.contoso.com zone. You need to ensure that all computers in the branch office register resource records in the west.contoso.com zone. What should you do?（）