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（）

A.ipconfig.exe /registerdns
B.net.exe stop dnscache & net.exe start dnscache
C.net.exe stop netlogon & net.exe start netlogon
D.regsvr32.exe dnsrslvr.dll

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（）

A.Configure dynamic updates.
B.Configure aging and scavenging.
C.Create a scheduled task that runs the Dnscmd /ClearCache command.
D.Create a scheduled task that runs the Dnscmd /ZoneReload contoso.com command.

单项选择题YouhaveanActiveDirectorydomainnamedcontoso.com.YouhaveadomaincontrollernamedServer1thatisconfiguredasaDNSserver.Server1hostsastandardprimaryzoneforcontoso.com.TheDNSconfigurationofServer1isshownintheexhibit.（ClicktheExhibitbutton.） Youdiscoverthatstaleresourcerecordsarenotautomaticallyremovedfromthecontoso.comzone.Youneedtoensurethatthestaleresourcerecordsareautomaticallyremovedfromthecontoso.comzone. Whatshouldyoudo（）

A.Set the scavenging period of Server1 to 0 days.
B.Modify the Server Aging/Scavenging properties.
C.Configure the aging properties for the contoso.com zone.
D.Convert the contoso.com zone to an Active Directory-integrated zone.

单项选择题Your network contains a domain controller that is configured as a DNS server. The server hosts  an Active Directory-integrated zone for the domain.     You need to reduce how long it takes until stale records are deleted from the zone.     What should you do（）

A.From the configuration directory partition of the forest， modify the tombstone lifetime.
B.From the configuration directory partition of the forest， modify the garbage collection interval.
C.From the aging properties of the zone， modify the no-refresh interval and the refresh interval.
D.From the start of authority （SOA） record of the zone， modify the refresh interval and the expire interval.

单项选择题Your network contains an Active Directory domain named contoso.com. The domain contains the  servers shown in the following table：     Server name  Operating system  Role   DC1  Windows Server 2008  Domain controller  DC2  Windows Server 2008 R2  Domain controller  DNS1  Windows Server 2008  DNS server  DNS2  Windows Server 2008 R2  DNS server     The functional level of the forest is Windows Server 2003. The functional level of the domain is  Windows Server 2003.   DNS1 and DNS2 host the contoso.com zone. All client computers run Windows 7 Enterprise.     You need to ensure that all of the names in the contoso.com zone are secured by using  DNSSEC.   What should you do first（）

A.Change the functional level of the forest.
B.Change the functional level of the domain.
C.Upgrade DC1 to Windows Server 2008 R2.
D.Upgrade DNS1 to Windows Server 2008 R2.