CCNA路由协议和概念第2单元.docx

CCNA路由协议和概念第2单元.docx

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CCNA路由协议和概念第2单元

1

窗体顶端

Whichstatementscorrectlyidentifytheroleofintermediarydevicesinthenetwork?

（Choosethree.）

determinepathwaysfordata

initiatedatacommunications

retimeandretransmitdatasignals

originatetheflowofdata

managedataflows

finalterminationpointfordataflow

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option1,Option3,andOption5arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.1.6NetworkMedia

2

窗体顶端

Selectthestatementsthatarecorrectconcerningnetworkprotocols.（Choosethree.）

definethestructureoflayerspecificPDU's

dictatehowtoaccomplishlayerfunctions

outlinethefunctionsnecessaryforcommunicationsbetweenlayers

limittheneedforhardwarecompatibility

requirelayerdependentencapsulations

eliminatestandardizationamongvendors

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option1,Option3,andOption5arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.3.2NetworkProtocols

∙2.4.1TheBenefitsofUsingaLayeredModel

∙2.4.6TheSendingandReceivingProcess

3

窗体顶端

Whataretwofunctionsofencapsulation?

（Choosetwo.）

tracksdelaybetweenenddevices

enablesconsistentnetworkpathsforcommunication

allowsmodificationoftheoriginaldatabeforetransmission

identifiespiecesofdataaspartofthesamecommunication

ensuresthatdatapiecescanbedirectedtothecorrectreceivingenddevice

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option4andOption5arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.2.4NetworkRepresentations

4

窗体顶端

Whatisaprimaryfunctionofthetrailerinformationaddedbythedatalinklayerencapsulation?

supportserrordetection

ensuresorderedarrivalofdata

providesdeliverytocorrectdestination

identifiesthedevicesonthelocalnetwork

assistsintermediarydeviceswithprocessingandpathselection

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption1

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.4.6TheSendingandReceivingProcess

∙2.4.7TheOSIModel

5

窗体顶端

WhichtwolayersoftheOSImodelhavethesamefunctionsastheTCP/IPmodelNetworkAccessLayer?

（Choosetwo.）

Network

Transport

Physical

DataLink

Session

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option3andOption4arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.4.8ComparingtheOSIModelwiththeTCP/IPModel

6

窗体顶端

WhatisaPDU?

corruptionofaframeduringtransmission

datareassembledatthedestination

retransmittedpacketsduetolostcommunication

alayerspecificencapsulation

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.3.3ProtocolSuitesandIndustryStandards

7

窗体顶端

Whichcharacteristiccorrectlyreferstoenddevicesinanetwork?

managedataflows

originatedataflow

retimeandretransmitdatasignals

determinepathwaysfordata

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption2

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.1.4EndDevicesandtheirRoleontheNetwork

8

窗体顶端

Refertotheexhibit."CellA"atIPaddress10.0.0.34hasestablishedanIPsessionwith"IPPhone1"atIPaddress172.16.1.103.Baseduponthegraphic,whichdevicetypebestdescribesthefunctionofwirelessdevice"CellA?

"

thedestinationdevice

anenddevice

anintermediatedevice

amediadevice

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption2

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.1.5IntermediaryDevicesandtheirRoleontheNetwork

9

窗体顶端

Refertotheexhibit.Whichthreelabelscorrectlyidentifythenetworktypesforthenetworksegmentsthatareshown?

（Choosethree.）

NetworkA--WAN

NetworkB--WAN

NetworkC--LAN

NetworkB--MAN

NetworkC--WAN

NetworkA--LAN

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option2,Option3,andOption6arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.2.2WideAreaNetworks

10

窗体顶端

WhichthreestatementsbestdescribeaLocalAreaNetwork（LAN）?

（Choosethree.）

ALANisusuallyinasinglegeographicalarea.

Thenetworkisadministeredbyasingleorganization.

TheconnectionbetweensegmentsintheLANisusuallythroughaleasedconnection.

Thesecurityandaccesscontrolofthenetworkarecontrolledbyaserviceprovider.

ALANprovidesnetworkservicesandaccesstoapplicationsforuserswithinacommonorganization.

EachendofthenetworkisgenerallyconnectedtoaTelecommunicationServiceProvider（TSP）.

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option1,Option2,andOption5arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.2.2WideAreaNetworks

11

窗体顶端

Refertotheexhibit.Whichnetworkingtermdescribesthedatainterleavingprocessrepresentedinthegraphic?

piping

PDU

streaming

multiplexing

encapsulation

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.3.1RulesthatGovernCommunications

12

窗体顶端

WhatistheprimarypurposeofLayer4portassignment?

toidentifydevicesonthelocalmedia

toidentifythehopsbetweensourceanddestination

toidentifytotheintermediarydevicesthebestpaththroughthenetwork

toidentifythesourceanddestinationenddevicesthatarecommunicating

toidentifytheprocessesorservicesthatarecommunicatingwithintheenddevices

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption5

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.5.4GettingtheDatatotheRightApplication

13

窗体顶端

Whatdeviceisconsideredanintermediarydevice?

fileserver

IPphone

laptop

printer

switch

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption5

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.1.5IntermediaryDevicesandtheirRoleontheNetwork

14

窗体顶端

Refertotheexhibit.WhichtermcorrectlyidentifiesthedevicetypethatisincludedintheareaB?

source

end

transfer

intermediary

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.1.5IntermediaryDevicesandtheirRoleontheNetwork

15

窗体顶端

Refertotheexhibit.Whattypeofnetworkisshown?

WAN

MAN

LAN

WLAN

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption3

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.2.1LocalAreaNetworks

16

窗体顶端

Whichlayerencapsulatesthesegmentintopackets?

physical

datalink

network

transport

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption3

0pointsforanyotheroption

2

Thisitemreferencescontentfromthefollowingareas:

CCNAExploration:

NetworkFundamentals

∙2.4.5ProtocolDataUnitsandEncapsulation

17

窗体顶端

Whatcanbeidentifiedbyexaminingthenetworklayerheader?

thedestinationdeviceonthelocalmedia

thedestinationhostaddress

thebitsthatwillbetransferredoverthemedia

thesourceapplicationorprocesscreatingthedata