Whatisastaticpacket－filteringfirewallusedfor?()A.Itvalidatesthefactthatapacketiseitheraconnectionrequestoradatapacketbelongingtoa connectionB.ItevaluatesnetworkpacketsforvaliddataattheapplicationlayerbeforeallowingconnectionsC.Itanalyzesnetworktrafficatth
题目
Whatisastaticpacket－filteringfirewallusedfor?()
A.Itvalidatesthefactthatapacketiseitheraconnectionrequestoradatapacketbelongingtoa connection
B.Itevaluatesnetworkpacketsforvaliddataattheapplicationlayerbeforeallowingconnections
C.Itanalyzesnetworktrafficatthenetworkandtransportprotocollayers
D.Itkeepstrackoftheactualcommunicationprocessthroughtheuseofastatetable