1WhichLayer1devicescanbeusedtoenlargetheareacoveredbyasingleLANsegment?(Selecttwo)DEA.SwitchB.RouterC.NICD.hubE.RepeaterF.RJ-45transceiver1.2AnISDNlinkcanbeencapsulatedusingeitherPPPorHDLC.WhataretheadvantagesofusingPPP?(Selecttwoanswerchoices)BDA.PPPiseasiertoconfigureandmaintainthanHDLC.B.PPPisconsistentlyimplementedamongdifferentequipmentvendors.C.PPPwillrunfasterandmoreefficientlythanHDLConcircuit-switchedISDNlinks.D.PPPauthenticationwillpreventunauthorizedcallersfromestablishinganISDNcircuit.E.PPPcanberoutedacrosspublicfacilities,whileHDLCisnotroutableincircuit-switchednetworks.F.PPPsupportsasynchronouscommunication.3Whichofthefollowingprotocolsoperateatthe'Applicationlayer'oftheOSImodel?(Selectallvalidanswers)BCA.TCPB.TelnetC.FTPD.ARPE.IPF.Noneoftheabove4Whichthreeoftheprotocolsbelowbelongtotheapplicationlayer?(Selectthreeanswerchoices)BCEA.ARPB.HTTPSC.SMTPD.CDPE.TFTPF.ICMP5InwhichSpanning-TreestatesdoesaswitchportlearnMACaddresses?(Selecttwo)CDA.BlockingB.ListeningC.ForwardingD.LearningE.Relaying6WhichOSIlayerisassociatedwiththefollowing:Theacknowledgementoftransmissions,sequencing,andflowcontrolacrossanetwork?(chooseone)CA.Layer2B.Layer3C.Layer4D.Layer5E.Layer6F.Layer77Refertothegraphic.Two2950switchesconnectthroughportsFa0/24andastraight-throughcable.Basedontheoutputoftheshowcdpneighborcommandfrombothswitchesandtheinformationgiven,whatcanbeconcluded?A.PortFa/24oneachswitchmustbeconfiguredinVLAN1inorderfortheswitchestoseeneighborinformation.B.PortFa0/24oneachswitchmustbeconfiguredasatrunkportinorderforneighborinformationtobereceived.C.Theswitchesarenotcabledproperly.D.AnIPaddressneedstobeassignedtobothswitches.E.VTPisincorrectlyconfiguredonswitchTK1.8Whichoftheprotocolsbelow,operatesatLayer2oftheOSImodel,andisusedtomaintainaloop-freenetwork?(chooseone)BA.RIPB.STPC.IGRPD.CDPE.VTP9YouhavesetupanInternetbasedFTPserver,wherepeoplecanuploadanddownloadfiles.IntermsoftheOSImodel,whatisthehighestlayeruse