单项选择题
A. Increase the Expires After setting to 4 days on the Start of Authority （SOA） record for the zone.
B. Increase the refresh interval setting o 4 days on the Start of Authority （SOA） record for the zone.
C. Configure the Zone Aging / Scavenging Properties dialog box to enable Scavenge State resource records， and set the refresh setting to 4 days.
D. Configure the Zone Aging / Scavenging Properties dialog b ox to enable Scavenge Stale resource records， and set the No-refresh interval setting to 4 days.
单项选择题 YourcompanyhasadomaincontrollernamedServer1thatrunsWindowsServer2008andtheDNSserverrole.AservernamedServer2runsacustomapplication.YouneedtoconfigureDNStoincludethefollowingparametersforthecustomapplication：ServicePriorityWeightProtocolPortNumberHostofferingthisserviceWhichrecordshouldyoucreate？（）
单项选择题 YourcompanyhasaservernamedServer1thatrunsWindowsServer2008.Server1runstheDHCPserverroleandtheDNSserverrole.YoualsohaveaservernamedServerCorethatrunsaServerCoreinstallationofWindowsServer2008.AllcomputersareconfiguredtouseonlyServer1forDNSresolution.TheIPaddressofServer1is192.168.0.1.ThenetworkinterfaceonallthecomputersisnamedLAN.Server1istemporarilyoffice.AnewDNSservernamedServer2hasbeenconfiguredtousetheIPaddress192.168.0.254.YouneedtoconfigureServerCoretouseServer2asthepreferredDNSserver.Whatshouldyoudo？（）
单项选择题 Your network contains a server that has the SNMP Service installed.You need to configure the SNMP security settings on the server.Which tool should you use?（）