思科第一学期期末考试最新考题CCNA1.docx
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思科第一学期期末考试最新考题CCNA1
1
Refertotheexhibit.WhichLayer2protocolcouldbeusedinsideneworkAandnetworkC?
IP
TCP
UDP
Ethernet
2
Refertotheexhibit.Whichsetofdevicescontainsonlyintermediarydevices?
A,B,D,G
A,B,E,F
C,D,G,I
G,H,I,J
3
Refertotheexhibit.Theheadersaddedateachlayerareshown.Whichlayeraddsthedestinationandsourceprocessnuensurethatdataisdeliveredtothecorrectapplication?
physicallayer
datalinklayer
networklayer
transportlayer
4TheLayer4headercontainswhichtypeofinformationtoaidinthedeliveryofdata?
serviceportnumber
hostlogicaladdress
devicephysicaladdress
virtualconnectionidentifier
5Whichfiberconnectorsupportsfull-duplexEthernet?
6Whichdeviceshouldbeusedforroutingapackettoaremotenetwork?
accessswitch
DHCPserver
hub
router
7
Refertotheexhibit.HostAsendsaframetohostCwithadestinationMACaddressCC.TheMACaddressforhostCisnotableofswitchSW1.HowwillSW1handletheframe?
SwitchSW1willdroptheframe.
SwitchSW1willforwardtheframetohostC.
SwitchSW1willfloodtheframeoutallports.
SwitchSW1willfloodtheframeoutallportsexceptportFa0/1.
8
Refertotheexhibit.AnetworktechnicianhasmadeseveralchangestoR1sincetheconfigurationhaslastbeensaved.Thconfigurationdidnotproducethedesiredchanges.Thetechnicianwantstostoreabackupcopyofthesavedconfigurationserverbeforereloading.WhichactionwillcausetheunmodifieddatatobesavedontheTFTPserver?
9Whichthreestatementsaretrueaboutnetworklayeraddressing?
（Choosethree.）
Ituniquelyidentifieseachhost.
Itassistsinforwardingpacketsacrossinternetworks.
Itusesalogical32-bitIPv4address.
Itisnotaconfigurableaddress.
Itisaphysicaladdress.
Itidentifiesthehostfromthefirstpartoftheaddress.
10Whatistheresultofusingtheclockrate56000commandattheserialinterfaceoftherouter?
TheinterfaceisconfiguredasaDCEdevice.
Theinterfacetimersarecleared.
TheFastEthernetinterfaceismadetoemulateaserialinterfacebyassigningitatimingsignal.
TheIPaddressfortheserialinterfaceisconfigured.
11
Examinethegraphicwithcurrentconfigurations.HostAintheClericalofficefailedandwasreplaced.Althoughapingto1successful,thereplacementcomputercannotaccessthecompanynetwork.WithproxyARPdisabledontheFa0/0interfaYorkrouter,whatisthelikelycauseoftheproblem?
networkcardfailure
networkcablesunplugged
IPaddressincorrectlyentered
subnetmaskincorrectlyentered
12Asnetworkadministrator,whatisthesubnetmaskthatallows510hostsgiventheIPaddress172.30.0.0?
255.255.0.0
255.255.248.0
255.255.252.0
255.255.254.0
255.255.255.0
255.255.255.128
13WhichOSIlayerusesaconnection-orientedprotocoltoensurereliabledeliveryofdata?
applicationlayer
presentationlayer
sessionlayer
transportlayer
14Anetworkhasgrowntoolargefortechnicianstoconfigurenetworkaddressesandhostsfilesfornameresolution.Whichtwlayerservicesshouldbeaddedtotheservertoallowtheseneedstobesatisfieddynamically?
（Choosetwo.）
DNS
FTP
DHCP
HTTP
SMTP
15
Refertotheexhibit.HostAwantstoaccesstheInternet.WhichcombinationofaLayer2addressandaLayer3addresswaccessfromhostA?
DestinationMAC:
0030.8596.DE83Defaultgateway:
209.165.202.130
DestinationMAC:
0030.8596.DE82Defaultgateway:
172.16.9.2
DestinationMAC:
0030.8517.44C4Defaultgateway:
172.16.1.1
DestinationMAC:
0030.8517.44C4Defaultgateway:
209.165.202.130
16Anetworkadministratorisaskedtodesignanewaddressingschemeforacorporatenetwork.Thereare60usersinthemusersinthebranchoffice,28usersinmanufacturing,12inthesalesoffice,and4usersintheresearchoffice.WhichVLSschemethatusesthe192.168.88.0/24networkwillfulfilltherequirementswhilewastingthefewestaddresses?
192.168.88.0/26main
192.168.88.32/26branch
192.168.88.64/26manufacturing
192.168.88.96/27sales
192.168.88.128/28research
192.168.88.0/26main
192.168.88.64/26branch
192.168.88.128/27manufacturing
192.168.88.160/28sales
192.168.88.176/29research
192.168.88.0/27main
192.168.88.32/27branch
192.168.88.64/28manufacturing
192.168.88.80/29sales
192.168.88.88/30research
192.168.88.0/27main
192.168.88.64/28branch
192.168.88.80/28manufacturing
192.168.88.96/29sales
192.168.88.104/30research
17WhichphysicalconnectortypeisusedforaserialV.35connectiontotheCSU/DSU?
18
Refertotheexhibit.Whichtwofactscanbedeterminedaboutthetopology?
（Choosetwo.）
Fourcollisiondomainsarepresent.
Onelogicalnetworkisrepresented.
Twobroadcastdomainsarepresent.
Threenetworksareneeded.
Threelogicaladdressrangesarerequired.
19WhatarethreecharacteristicsofCSMA/CD?
（Choosethree.）
Itmonitorsthemediaforpresenceofadatasignal.
Afterdetectingacollision,hostscanresumetransmissionafterarandomtimerhasexpired.
Ajamsignalisusedtoensurethatallhostsareawarethatacollisionhasoccurred.
Devicescanbeconfiguredwithahighertransmissionpriority.
Dataistransmittedonlywhenthedatasignalispresent.
Itusesatokensystemtoavoidcollisions.
20
Refertotheexhibit.Theserialinterfaceoftherouterwasconfiguredwiththeuseofthecommandsthatareshown.Theropingtherouterthatisdirectlyconnectedtointerfaceserial0/0/0.Whatshouldthenetworktechniciandotosolvethisprob
Configurethedescriptionatinterfaceserial0/0/0.
ConfigureanIPaddressoninterfaceserial0/0/0.
Removethenoshutdowncommandatinterfaceserial0/0/0
Reboottherouter.
21WhichOSIlayerusestheheaderinformationtoreassemblethedatasegmentsintostreams?
applicationlayer
networklayer
presentationlayer
sessionlayer
transportlayer
22
Refertotheexhibit.TheNATfunctionalityoftherouterisenabledtoprovideInternetaccesstothePC.However,thePCtoaccesstheInternet.WhichIPaddressshouldbechangedto209.165.201.1toenablethePCtoaccesstheInternet?
192.168.1.191
192.168.1.101
192.168.1.1
192.168.1.254
23
Refertotheexhibit.AtechnicianusesthenslookupcommandonthePCandviewstheoutputthatisdisplayedintheex
theIPaddressoftheprimarydomainnameserverusedbythehost?
10.10.10.32
192.168.1.5
192.168.1.99
192.168.2.100
24WhichmemorycontentswillchangeasaresultofusingtheRouter#
erasestartup-config
commandonarouter?
RAM
ROM
flash
NVRAM
25Whileconfiguringarouter,anetworktechnicianwantstonametherouter.Whichpromptshouldthetechnicianseewhenhostnamecommand?
Router>
Router#
Router（config）#
Router（config-line）#
26
Refertotheexhibit.ThePC,theroutingtableofwhichisdisplayed,isconfiguredcorrectly.TowhichnetworkdeviceorintheIPaddress192.168.1.254belong?
PC
switch
routerinterfacefa0/0
routerinterfacefa0/1
27
Refertotheexhibit.AnetworkadministratoristroubleshootingalinkthatisdownbetweenRouter1andRouter2.Tocorreproblem,whichwirepairsneedtobeswitchedononeoftheEthernetcableends?
pair1andpair2
pair1andpair3
pair2andpair3
pair2andpair4
28
Refertotheexhibit.APCisconnectedtoanetwork.WhichactionwillverifythatthePCcancommunicatewithitsdefault
Usetheping127.0.0.1command.
Usetheipconfigcommand.
Usetheipconfig/allcommand.
Usetheping10.0.0.254command.
29
Refertotheexhibit.HostBwaspoweredoff.WhatchangewilloccurintheMACtableoftheswitch?
Thetablewillremainunaffected.
TheswitchwillremovetheMACaddressatFa0/19.
TheswitchwillretaintheMACaddressuntilhostBispoweredonagain.
TheswitchwillrebuildtheMACtablebyassigningtheFFFF.FFFF.FFFFaddresstoportFa0/19.
30WhatinformationiscontainedintheheaderofLayer3tohelpdatadelivery?
portnumber
devicephysicaladdress
destinationhostlogicaladdress
virtualconnectionidentifier
31Anetworktechnicianistaskedwithsettingupanetworkforsixusers,buttheusersshouldbeabletousetheiraccountstanyofthesixcomputers.Whattypeofnetworkshouldbeused?
workgroup
P2Papplications
peer-to-peernetwork
client-servernetwork
32
Refertotheexhibit.AwebbrowserisrunningonhostPC1withanIPaddress10.10.2.2/24.Adynamicportnumberof49assignedtothebrowser.ThebrowsersendsarequestforawebpagetothewebserverwithanIPaddress192.168.1.25statementistrue?
ThesessionisestablishedusingTCP,andthesocketnumberforthewebserveris192.168.1.254:
80.
ThesessionisestablishedusingTCP,andthesocketnumberforthewebserveris192.168.1.254:
49152.
ThesessionisestablishedusingUDP,andthesocketnumberforthewebserveris192.168.1.254:
80.
ThesessionisestablishedusingUDP,andthesocketnumberforthewebserveris192.168.1.254:
49152.
33
Refertotheexhibit.AnadministratoronPC1wantstoviewsomeHTMLcodefromawebpagehousedonthewebserve
applicationwillallowthisrequesttobestarted?
34
Refertotheexhibit.WhatisrequiredonhostAforanetworktechniciantocreatetheinitialconfigurationonRouter1?
anFTPclient
aTelnetclient
at
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