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单项选择题

YourcompanyhasaDNSservernamedServer1.YourpartnercompanyhasaDNSservernamedServer2.YoucreateastubzoneonServer1.ThemasterforthestubzoneisServer2.Server2fails.Youdiscoverthatusersarenotabletoresolvenamesforthepartnercompany.YouneedtoensurethatusersareabletoresolvenamesforthepartnercompanyintheeventthatServer2fails.Whatshouldyoudo?()
A.ChangethestubzonetoasecondaryzoneonServer1
B.OpentheSOArecordforthezoneonServer2.ChangetheMinimum(default)TTLsettingto12hours.
C.OpentheDNSzoneforthepartnercompanyonServer2.CreateanewRouteThrough(RT)recordandanewhost(A)recordforServer1.
D.OpentheprimaryDNSzoneonServer2.CreateanewServiceLocator(SRV)recordandanewhost(A)recordforServer1.

    A.YourpartnercompanyhasaDNSservernamedServer2.YoucreateastubzoneonServer1.ThemasterforthestubzoneisServer2.Server2fails.Youdiscoverthatusersarenotabletoresolvenamesforthepartnercompany.YouneedtoensurethatusersareabletoresolvenamesforthepartnercompanyintheeventthatServer2fails.Whatshouldyoudo?()
    A.ChangethestubzonetoasecondaryzoneonServer1
    B.OpentheSOArecordforthezoneonServer2.ChangetheMinimum(default)TTLsettingto12hours.
    C.OpentheDNSzoneforthepartnercompanyonServer2.CreateanewRouteThrough(RT)recordandanewhost(A)recordforServer1.
    D.OpentheprimaryDNSzoneonServer2.CreateanewServiceLocator(SRV)recordandanewhost(A)recordforServer1.
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