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1、2015年思科模拟题：CCNA、CCNP、CCIE模拟试题ccnal.whichofthefollowingtypesofpacketswillbeallowedentrywhenaserialinterfacesinboundaccesslisthasbeenconfiguredtoprohibitentryfortcpandudpports21,23and25?(selectthreeoptions.)a. smtpb. stpc. ftpd. telnete. httpf. pop32.oneofthetraineesassignedtoyouwanttoknowwhichservice
2、susetcp.whatcanyoutellhim?(selectthreeoptions.)a. dhcpb. smtpc. snmpd. ftpe. httpf. tftpwanwhichofthefollowingnetworkmaskswouldyouusetoreduceanywastageofipaddressesinpoint-to-pointlinksonanetworkthatsupportsvlsm?a. /38b. /30c. /27d. /23/18howwouldyouconfigurearoutertoavoidsituationssuchassplithorizo
3、nissueshamperingroutingupdatesonaframerelaynetwork?configureaseparatesub-interfaceforeachpvcwithauniquedlciandsubnetassignedtothesubinterface.a. configureeachframerelaycircuitasapoint-to-pointlinetosupportmulticastandbroadcasttraffic.configureonesub-interfacetodisperseintomultiplepvcconnectionstomul
4、tipleremoterouterinterfaces.b. configureasmanyaspossiblesub-interfacesonthesamesubnet.3. withregardtoisdn,whichofthefollowingaretrue?(chooseallthatapply.)a. legacyddrcanuseportinformationtodefineinterestingtraffic.legacyddrcanconfiguremultipledialerconfigurationsonthesameinterface.b. legacyddrcanuse
5、aclstodefineinterestingtraffic.hdlcorpppcanbeusedtoencapsulateisdndchannelinformation.thebriinterfacesonisdnrouterswithdialerprofilesconfiguredcannotbelongtomultipledialerpools.dialerprofilescannotuseaclstodefineinterestingtraffic.ccnp-bsci4. whichofthefollowingisacharacteristicoflink-stateprotocols
6、?a. anetworktopologychangegeneratesanupdatethatisbroadcasttoeveryrouteronthenetwork.theperiodicroutingupdateintervalisslightlydifferentineachrouteronasubnet.whentheb. eachroutercreatesaroutingtablethatonlyincludesitsdirectlyconnectedneighbors.c. link-stateprotocolssendroutingupdatesonlythereisachang
7、einthenetworktopology.5. whatisthetermassociatedwithsynchronizingroutingtablesafteratopologychangeoccurs?a. floodingb. broadcastingc. convergeneesummarizationwhichofthefollowingmustbedeterminedfirstbytherouterinordertoroutethedata?a. thedistaneemetricofthedatab. thesourceaddressofthedatac. whichrout
8、ingprotocolisusedbythedatawhethertheprotocolsuiteofthedataisactiveyouareatechnicianatabc.abchasthesubnet/maskof172.29.100.0/26setasideforsmallremotelocations.eachlocationwillhave5ipdevicesconnectedtothenetwork.whichvlsmmaskwillprovidetheminimumnumberofhostsyourequire?a. /27b. /28c. /29d. /30e. /31lO
9、.youareatraineetechnicianatabc.yourinstructorshowsyouthefollowingroutesummarizationentry:192.168.134.0/22yourinstructorwantstoknowhowmanyclasscaddressesarecontainedinthissummarization.whatwouldyourreplybe?a. 1b. 2c. 4d. 8e. 16-bcmsnwhichcommandenablesanetherchannelbundleonacatalyst2900xlswitch?a. po
10、rtgroupb. setportchannelonc. portetherchannelenable11. setetherchannelportenablewhichtwostatementsaboutdynamicvlansaretrue?(choosetwo)a. eachswitchportisassignedtoaspecificvlan.b. dynamicvlansrequireavlanmembershippolicyserver.c. devicesareinthesamevlanregardlessofwhichporttheyattachto.dynamicvlanas
11、signmentaremadethroughthecommandinterface.12. whichstatementiscorrectabout802.1qtrunking?(selectallthatapply)a. bothswitchesmustbeinthesamevtpdomain.b. theencapsulationtypeofbothendsofthetrunkdoesnothavetomatch.c. thenativevianonbothendsofthetrunkmustbevian1.802.1qtrunkingcanonlybeconfiguredonalayer
12、2port.in802.1qtrunking,allvianpacketsaretaggedonthetrunklink,exceptthenativevlan.13. youneedtotakeadvantageoffastethernetports.whichtwoactionsavoidconfigurationproblemsthatcausetheporttobeautomaticallydisabled?(choosetwo)a. allowsomeportsinachanneltobedisabled.b. configuretheportsinachannelasdynamic
13、vlanports.c. configureallportsinachanneltooperateatthesamespeedandduplexmode.assignallportsinachanneltothesamevlanorconfigurethemastrunkports.14. whatisthecauseofjitter?a. variablequeuedelaysb. packetdropsc. transmittingtoomanysmallpacketscompression-bcranareregardingdhcp,dhcprelayanddhcpservermutua
14、llyexclusive.a. noneofthechoices.b. truec. falseonlyforcertainiosversiond. false15. falseonlyforiosversionbelowv10alapdaddressfieldcanbe1or2byteslong.a. trueb. falsec. trueonlyintheusd. trueonlyinasiae. trueonlyineurope16. whichofthefollowingarevalidfunctionsofthelockdtemodemattribute(chooseallthata
15、pply)?a. disableuart.b. enableuart.locksthedataspeedbetweenthecomputermotherboardandthers232port.c. locksthedataspeedbetweenthemodemandthedtedevice.17. whichofthefollowingarenotthevalidtypesofatmaddresses(chooseallthatapply)?a. dccb. gctc. bspd. icde. nsapf. aed18. whichofthefollowingarenotthevalidtypesofx.25plppacketfields(chooseallthatapply)?a. userdatab. lcic. gfid. ptie. noneofthechoices.-.yournewlyappointedabctraineewantstoknowwhatthesimilaritiesbetweentopologydiagramsandnetworkconfigurationtablesare.whatwouldyour
