单项选择题

WhichstatementiscorrectregardingNBARandNetFlow？（）

A.NetFlowusesfivekeyfieldsfortheflow
B.NBARexaminesdatainLayers3and4
C.NetFlowexaminesdatainLayers3and4
D.NBARexaminesdatainLayers2through4
E.NetFlowexaminesdatainLayers2through4

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单项选择题

Inbasee－Commercemoduledesigns，whereshouldfirewallperimetersbeplaced？（）

A.corelayer
B.Internetboundary
C.aggregationlayer
D.aggregationandcorelayers
E.accessandaggregationlayers

单项选择题

Whichsite-to-siteVPNsolutionallowsCiscorouters，PIXFirewalls，andCiscohardwareclientstoactasremoteVPNclientsinordertoreceivepredefinedsecuritypoliciesandconfigurationparametersfromtheVPNheadendatthecentralsite？（）
A.EasyVPN
B.GREtunneling
C.VirtualTunnelInterfaces
D.DynamicMultipointVPN
E.GroupEncryptedTransportVPN

A.EasyVPN
B.GREtunneling
C.VirtualTunnelInterfaces
D.DynamicMultipointVPN
E.GroupEncryptedTransportVPN