Your network contains an Active Directory domain named contoso.com. You run nslookup.exe as  shown in the following Command Prompt window.    
You need to ensure that you can use Nslookup to list all of the service location （SRV） resource  records for contoso.com.    
What should you modify（）

单项选择题Your network contains a single Active Directory domain named contoso.com. The domain  contains two domain controllers named DC1 and DC2 that run Windows Server 2008 R2. DC1  hosts a primary zone for contoso.com. DC2 hosts a secondary zone for contosto.com. On DC1，  you change the zone to an Active Directory-integrated zone and configure the zone to accept  secure dynamic updates only.     You need to ensure that DC2 can accept secure dynamic updates to the contoso.com zone.     Which command should you run（）

A.dnscmd.exe dc2.contoso.com /createdirectorypartition dns.contoso.com
B.dnscmd.exe dc2.contoso.com /zoneresettype contoso.com /dsprimary
C.dnslint.exe /ql
D.repadmin.exe /syncall /force

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（）

A.Create a DNS forwarder.
B.Create a DNS delegation.
C.Configure root hint servers.
D.Configure an alternate DNS server on all client computers.

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.