YournetworkconsistsofasingleActiveDirectorydomain.AllserversrunWindowsServer2003ServicePack2(SP2).AfirewallseparatestheinternalnetworkfromtheInternet.ThefirewallblocksalloutboundtrafficexceptforHTTPandSMTPtraffic.YouinstallaDNSserver.TheDNSserverisconfiguredtousethedefaultroothints.YouneedtoensurethattheDNSservercanresolvethehostnamesontheInternet.Whichportshouldyouopenonthefirewall?()

A.53 B.135 C.500 D.3389

时间:2023-09-20 09:43:57

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