CCNA Exploration 4 Accessing the WAN Chapter 2

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1、CCNAExploration4AccessingtheWANChapter21Refertotheexhibit.WhichstatementistrueaboutPPPoperation?4Layer2isdown.LCP,IPCP,andCDPCPnegotiationsareinprogress.Onlythelink-establishmentphasecompletedsuccessfully.Boththelink-establishmentandnetwork-layerphasecompletedsuccessfully.2WhichPPPconfigurationop

2、tioncanbeusedtoestablishloadbalancingovertheinterfacesofarouter?2callbackmultilinkcompressionerrordetection3WhatfunctiondoNetworkControlProtocolsprovideforaPPPconnection?5tosupplyerrordetectiontoestablishandterminatedatalinkstoprovideauthenticationcapabilitiestoPPPtomanagenetworkcongestionandtoal

3、lowqualitytestingofthelinktoallowmultipleLayer3protocolstooperateoverthesamephysicallink4Whatdoesthedemarcationpointrepresentindatacommunicationphysicalcircuits?3DTE/DCEinterfaceonthedeviceconnectingtotheInternetlocationofthefirewallorrouterphysicalpointatwhichthepublicnetworkendsandtheprivatecus

4、tomernetworkbeginstagassignedtothephysicalblockwhereacross-connectoccurs5WhichtwooptionscanLCPnegotiate?(Choosetwo.)12linkqualityauthenticationdynamicflowcontrolcompressionandnetworklayeraddressforIPconnection-orientedorconnectionlesscommunicationmethods6Refertotheexhibit.Whatcanbeconcludedaboutt

5、hefunctionoftheSerial0/0/0interfaceontherouterafterthecommandsareentered?4Allusernameandpasswordinformationthatissentwillbeencrypted.Allauthenticationontheseriallinkwillbeaccomplishedusingathree-wayhandshake.ThePredictoralgorithmwillbeusedtocompressallpacketsthataresentandreceivedontheseriallink.

6、Theseriallinkwillbeclosedifthenumberofreceivedpacketsatthedestinationnodefallsbelow90percentofthepacketsthataresent.7Refertotheexhibit.RouterR1isnotabletocommunicatewithaneighborrouterthatisdirectlyconnectedtoserial0/0/0.Whatisthereasonforthis?5InterfaceSerial0/0/0resetsveryfrequently.PPPLQMhassh

7、utdowntheserialinterface.Theserialinterfacehasnoinputoroutputqueuesavailable.TheserialinterfaceisnotconfiguredforaLayer2protocol.Theinterfacehasbeenadministrativelyshutdownwiththeshutdowncommand.8Whichauthenticationpro