A. MPLS LSP
B. ATM tunnel
C. GRE tunnel
D. IPSEC tunnel
E. L2TPv3 session
第1题:
A.Layer2
B.Layer3
C.Layer4
D.Layer2andLayer3
E.Layer3andLayer4
第2题:
A.Layer2accesslinkQoSdesign
B.enterprise-to-service-providermappingmodels
C.Layer3linkaccessQoSdesign
D.serviceproviderservicelevelagreements
E.Layer2linkaccessloadbalancing
第3题:
A.NAPandNSPprovidesecureaccesstocorporategatewayswithoutmanagingend-to-endPVCs.NAPandNSPuseLayer3routing,Layer2Forwarding,orLayer2TunnelingProtocoltunnels.Hence,theycanscaletheirbusinessmodelsforsellingwholesaleservice
B.TheNSPcanoversubscribebydeployingidleandsessiontimeoutsusinganindustrystandard RADIUSserverforeachsubscriber
C.OnlyasinglesessionperCPEononevirtualchannel (VC).Theusernameandpasswordare configuredontheCPE,soallusersbehindtheCPEforthatparticularVCcanaccessonlyonesetofservices.Userscannotselectdifferentsetsofservices,althoughusingmultipleVCsandestablishing differentPPPsessionondifferentVCsispossible
D.IfasingleIPaddressisprovidedtotheCPE,andNATorPATisimplemented,certain applications suchasIPTV,whichembedIPinformationinthepayload,wellnotwork.Additionally,ifanIP subnet featureisused,anIPaddressalsohastobereservedfortheCPE
E.PPPoAcanusethefeaturesontheCiscoServiceSelectionGateway(SSG)
第4题:
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
E. Layer 6
F. Layer 7
第5题:
A.ReversePathForwarding
B.Hardware-basedforwarding
C.UDPforwarding
D.Layer2Forwarding
第6题:
A.Layer2
B.Layer3
C.Layer4
D.Layer5
E.Layer6
F.Layer7