单项选择题

A.Configure dynamic updates.B.Configure aging and scave……

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.

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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.

单项选择题Yourcompanyhasamainofficeandabranchoffice. ThenetworkcontainsanActiveDirectorydomainnamedcontoso.com.TheDNSzoneforcontoso.comisconfiguredasanActiveDirectory-integratedzoneandisreplicatedtoalldomaincontrollersinthedomain. ThemainofficecontainsawritabledomaincontrollernamedDC1.Thebranchofficecontainsaread-onlydomaincontroller（RODC）namedRODC1.AlldomaincontrollersrunWindowsServer 2008R2andareconfiguredasDNSservers. YouuninstalltheDNSserverrolefromRODC1.YouneedtopreventDNSrecordsfromreplicatingtoRODC1. Whatshouldyoudo（）

A.Modify the replication scope for the contoso.com zone.
B.Flush the DNS cache and enable cache locking on RODC1.
C.Configure conditional forwarding for the contoso.com zone.
D.Modify the zone transfer settings for the contoso.com zone.

单项选择题YournetworkcontainsanActiveDirectorydomainnamedcontoso.com.Youcreatea GlobalNameszone.Youaddanalias（CNAME）resourcerecordnamedServer1tothezone.Thetargethostoftherecordisserver2.contoso.com.WhenyoupingServer1，youdiscoverthatthe namefailstoresolve. Yousuccessfullyresolveserver2.contoso.com.YouneedtoensurethatyoucanresolvenamesbyusingtheGlobalNameszone. Whatshouldyoudo（）

A.From the command prompt， use the netsh tool.
B.From the command prompt， use the dnscmd tool.
C.From DNS Manager， modify the properties of the GlobalNames zone.
D.From DNS Manager， modify the advanced settings of the DNS server.