CCNA路由协议和概念第8单元.docx
《CCNA路由协议和概念第8单元.docx》由会员分享，可在线阅读，更多相关《CCNA路由协议和概念第8单元.docx（16页珍藏版）》请在冰豆网上搜索。
CCNA路由协议和概念第8单元
1
窗体顶端
WhichOSIlayerisresponsibleforbinarytransmission,cablespecification,andphysicalaspectsofnetworkcommunication?
Presentation
Transport
DataLink
Physical
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption4
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.1.1PhysicalLayer-Purpose
2
窗体顶端
Aninstalledfiberruncanbecheckedforfaults,integrity,andtheperformanceofthemediabyusingwhatdevice?
lightinjector
OTDR
TDR
multimeter
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption2
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.8MediaConnectors
3
窗体顶端
Whichcharacteristicsdescribefiberopticcable?
（Choosetwo.）
ItisnotaffectedbyEMIorRFI.
Eachpairofcablesiswrappedinmetallicfoil.
Itcombinesthetechniqueofcancellation,shieldingandtwistingtoprotectdata.
Ithasamaximumspeedof100Mbps.
ItisthemostexpensivetypeofLANcabling.
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
Option1andOption5arecorrect.
1pointforeachcorrectoption.
0pointsifmoreoptionsareselectedthanrequired.
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.6FiberMedia
4
窗体顶端
Whenisastraight-throughcableusedinanetwork?
whenconnectingarouterthroughtheconsoleport
whenconnectingoneswitchtoanotherswitch
whenconnectingahosttoaswitch
whenconnectingaroutertoanotherrouter
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.3UnshieldedTwistedPair（UTP）Cable
5
窗体顶端
Refertotheexhibit.WhichtypeofCategory5cableisusedtomakeanEthernetconnectionbetweenHostAandHostB?
coaxcable
rollovercable
crossovercable
straight-throughcable
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.3UnshieldedTwistedPair（UTP）Cable
6
窗体顶端
Whichmethodofsignaltransmissionusesradiowavestocarrysignals?
electrical
optical
wireless
acoustic
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.7WirelessMedia
7
窗体顶端
InmostbusinessLANs,whichconnectorisusedwithtwisted-pairnetworkingcable?
BNC
RJ-11
RJ-45
TypeF
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.8MediaConnectors
8
窗体顶端
Whichofthefollowingisacharacteristicofsingle-modefiber-opticcable?
generallyusesLEDsasthelightsource
relativelylargercorewithmultiplelightpaths
lessexpensivethanmultimode
generallyuseslasersasthelightsource
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption4
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.6FiberMedia
9
窗体顶端
Whichtypeofcablerunismostoftenassociatedwithfiber-opticcable?
backbonecable
horizontalcable
patchcable
workareacable
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption1
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.6FiberMedia
10
窗体顶端
Whatarethreemeasuresofdatatransfer?
（Choosethree.）
goodput
frequency
amplitude
throughput
crosstalk
bandwidth
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
Option1,Option4,andOption6arecorrect.
1pointforeachcorrectoption.
0pointsifmoreoptionsareselectedthanrequired.
3
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.2.3DataCarryingCapacity
11
窗体顶端
Withtheuseofunshieldedtwisted-paircopperwireinanetwork,whatcausescrosstalkwithinthecablepairs?
themagneticfieldaroundtheadjacentpairsofwire
theuseofbraidedwiretoshieldtheadjacentwirepairs
thereflectionoftheelectricalwavebackfromthefarendofthecable
thecollisioncausedbytwonodestryingtousethemediasimultaneously
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption1
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.3UnshieldedTwistedPair（UTP）Cable
12
窗体顶端
WhatisaprimaryroleofthePhysicallayerintransmittingdataonthenetwork?
createthesignalsthatrepresentthebitsineachframeontothemedia
providephysicaladdressingtothedevices
determinethepathpacketstakethroughthenetwork
controldataaccesstothemedia
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption1
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.1.1PhysicalLayer-Purpose
13
窗体顶端
InLANinstallationswherepotentialelectricalhazardsorelectromagneticinterferencemaybepresent,whattypeofmediaisrecommendedforbackbonecabling?
coax
fiber
Cat5eUTP
Cat6UTP
STP
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption2
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.6FiberMedia
14
窗体顶端
Whatisapossibleeffectofimproperlyapplyingaconnectortoanetworkcable?
Datawillbeforwardedtothewrongnode.
Datatransmittedthroughthatcablemayexperiencesignalloss.
Animpropersignalingmethodwillbeimplementedfordatatransmittedonthatcable.
Theencodingmethodfordatasentonthatcablewillchangetocompensatefortheimproperconnection.
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption2
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.8MediaConnectors
15
窗体顶端
WhichfiberconnectorsupportsfullduplexEthernet?
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.8MediaConnectors
16
窗体顶端
Whatisconsideredabenefitofwirelessasamediachoice?
morehostmobility
lowersecurityrisks
reducedsusceptibilitytointerference
lessimpactofthesurroundingsontheeffectivecoveragearea
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption1
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.7WirelessMedia
17
窗体顶端
WhatcharacteristicofUTPcablehelpsreducetheeffectsofinterference?
themetalbraidingintheshielding
thereflectivecladdingaroundcore
thetwistingofthewiresinthecable
theinsulatingmaterialintheouterjacket
窗体底端
Observable
Description
MaxValue
1
correctnessofresponse
2pointsforOption3
0pointsforanyotheroption
2
Thisitemreferencescontentfromthefollowingareas:
CCNAExploration:
NetworkFundamentals
∙8.3.3UnshieldedTwistedPair（UTP）Cable
升级会员 