English FormC ENetwork v40 Chapter 2Word文档下载推荐.docx
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English FormC ENetwork v40 Chapter 2Word文档下载推荐.docx
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Observable
Description
MaxValue
1
correctnessofresponse
Option1,Option3,andOption5arecorrect.
1pointforeachcorrectoption.
0pointsifmoreoptionsareselectedthanrequired.
3
∙2.3.2NetworkProtocols
∙2.4.1TheBenefitsofUsingaLayeredModel
∙2.4.6TheSendingandReceivingProcess
Selectthestatementsthatarecorrectconcerningnetworkprotocols.(Choosethree.)
definethestructureoflayerspecificPDU'
s
dictatehowtoaccomplishlayerfunctions
outlinethefunctionsnecessaryforcommunicationsbetweenlayers
limittheneedforhardwarecompatibility
requirelayerdependentencapsulations
eliminatestandardizationamongvendors
∙2.2.4NetworkRepresentations
Whataretwofunctionsofencapsulation?
(Choosetwo.)
tracksdelaybetweenenddevices
enablesconsistentnetworkpathsforcommunication
allowsmodificationoftheoriginaldatabeforetransmission
identifiespiecesofdataaspartofthesamecommunication
ensuresthatdatapiecescanbedirectedtothecorrectreceivingenddevice
Option4andOption5arecorrect.
2
∙2.4.7TheOSIModel
Whatisaprimaryfunctionofthetrailerinformationaddedbythedatalinklayerencapsulation?
supportserrordetection
ensuresorderedarrivalofdata
providesdeliverytocorrectdestination
identifiesthedevicesonthelocalnetwork
assistsintermediarydeviceswithprocessingandpathselection
2pointsforOption1
0pointsforanyotheroption
∙2.4.8ComparingtheOSIModelwiththeTCP/IPModel
WhichtwolayersoftheOSImodelhavethesamefunctionsastheTCP/IPmodelNetworkAccessLayer?
Network
Transport
Physical
DataLink
Session
Option3andOption4arecorrect.
∙2.3.3ProtocolSuitesandIndustryStandards
WhatisaPDU?
corruptionofaframeduringtransmission
datareassembledatthedestination
retransmittedpacketsduetolostcommunication
alayerspecificencapsulation
2pointsforOption4
∙2.1.4EndDevicesandtheirRoleontheNetwork
Whichcharacteristiccorrectlyreferstoenddevicesinanetwork?
originatedataflow
2pointsforOption2
∙2.1.5IntermediaryDevicesandtheirRoleontheNetwork
Refertotheexhibit."
CellA"
atIPaddress10.0.0.34hasestablishedanIPsessionwith"
IPPhone1"
atIPaddress172.16.1.103.Baseduponthegraphic,whichdevicetypebestdescribesthefunctionofwirelessdevice"
CellA?
"
thedestinationdevice
anenddevice
anintermediatedevice
amediadevice
∙2.2.2WideAreaNetworks
Refertotheexhibit.Whichthreelabelscorrectlyidentifythenetworktypesforthenetworksegmentsthatareshown?
NetworkA--WAN
NetworkB--WAN
NetworkC--LAN
NetworkB--MAN
NetworkC--WAN
NetworkA--LAN
Option2,Option3,andOption6arecorrect.
WhichthreestatementsbestdescribeaLocalAreaNetwork(LAN)?
ALANisusuallyinasinglegeographicalarea.
Thenetworkisadministeredbyasingleorganization.
TheconnectionbetweensegmentsintheLANisusuallythroughaleasedconnection.
Thesecurityandaccesscontrolofthenetworkarecontrolledbyaserviceprovider.
ALANprovidesnetworkservicesandaccesstoapplicationsforuserswithinacommonorganization.
EachendofthenetworkisgenerallyconnectedtoaTelecommunicationServiceProvider(TSP).
Option1,Option2,andOption5arecorrect.
∙2.3.1RulesthatGovernCommunications
Refertotheexhibit.Whichnetworkingtermdescribesthedatainterleavingprocessrepresentedinthegraphic?
piping
PDU
streaming
multiplexing
encapsulation
∙2.5.4GettingtheDatatotheRightApplication
WhatistheprimarypurposeofLayer4portassignment?
toidentifydevicesonthelocalmedia
toidentifythehopsbetweensourceanddestination
toidentifytotheintermediarydevicesthebestpaththroughthenetwork
toidentifythesourceanddestinationenddevicesthatarecommunicating
toidentifytheprocessesorservicesthatarecommunicatingwithintheenddevices
2pointsforOption5
Whatdeviceisconsideredanintermediarydevice?
fileserver
IPphone
laptop
printer
switch
Refertotheexhibit.WhichtermcorrectlyidentifiesthedevicetypethatisincludedintheareaB?
source
end
transfer
intermediary
∙2.2.1LocalAreaNetworks
Refertotheexhibit.Whattypeofnetworkisshown?
WAN
MAN
LAN
WLAN
2pointsforOption3
∙2.4.5ProtocolDataUnitsandEncapsulation
Whichlayerencapsulatesthesegmentintopackets?
physical
datalink
network
transport
∙2.5.3GettingtheDatathroughtheInternetwork
Whatcanbeidentifiedbyexaminingthenetworklayerheader?
thedestinationdeviceonthelocalmedia
thedestinationhostaddress
thebitsthatwillbetransferredoverthemedia
thesourceapplicationorprocesscreatingthedata
Refertotheexhibit.Whichsetofdevicescontainsonlyenddevices?
A,C,D
B,E,G,H
C,
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