English FormC ENetwork v40 Chapter 6.docx

English FormC ENetwork v40 Chapter 6.docx

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EnglishFormCENetworkv40Chapter6

CCNAExploration:

NetworkFundamentals

∙6.5.2Subnetting-DividingNetworksintoRightSizes

AssessmentItem:

窗体顶端

Refertotheexhibit.WhichnetworkprefixwillimplementtheIPaddressingschemefortheLANsshowninthegraphic?

/24

/16

/20

/27

/25

/28

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.2.1TypesofAddressesinanIPv4Network

AssessmentItem:

窗体顶端

WhichIPv4subnettedaddressesrepresentvalidhostaddresses?

（Choosethree.）

172.16.4.127/26

172.16.4.155/26

172.16.4.193/26

172.16.4.95/27

172.16.4.159/27

172.16.4.207/27

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option2,Option3,andOption6arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

CCNAExploration:

NetworkFundamentals

∙6.2.6SpecialIPv4Addresses

AssessmentItem:

窗体顶端

WhichstatementsaretrueregardingIPaddressing?

（Choosetwo.）

NATtranslatespublicaddressestoprivateaddressesdestinedfortheInternet.

Onlyonecompanyisallowedtouseaspecificprivatenetworkaddressspace.

PrivateaddressesareblockedfrompublicInternetbyrouter.

Network172.32.0.0ispartoftheprivateaddressspace.

IPaddress127.0.0.1canbeusedforahosttodirecttraffictoitself.

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option3andOption5arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

2

CCNAExploration:

NetworkFundamentals

∙6.4.2ANDing-WhatIsInOurNetwork?

AssessmentItem:

窗体顶端

WhichprocessdoroutersusetodeterminethesubnetnetworkaddressbaseduponagivenIPaddressandsubnetmask?

binaryadding

hexadecimalanding

binarydivision

binarymultiplication

binaryANDing

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption5

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.2.2CalculatingNetwork,HostsandBroadcastAddresses

AssessmentItem:

窗体顶端

Refertotheexhibit.HostAisconnectedtotheLAN,butitcannotgetaccesstoanyresourcesontheInternet.Theconfigurationofthehostisshownintheexhibit.Whatcouldbethecauseoftheproblem?

Thehostsubnetmaskisincorrect.

Thedefaultgatewayisanetworkaddress.

Thedefaultgatewayisabroadcastaddress.

Thedefaultgatewayisonadifferentsubnetfromthehost.

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.4.1TheSubnetMask-DefiningtheNetworkandHostPortions

AssessmentItem:

窗体顶端

Whatsubnetmaskwouldanetworkadministratorassigntoanetworkaddressof172.30.1.0ifitwerepossibletohaveupto254hosts?

255.255.0.0

255.255.255.0

255.255.254.0

255.255.248.0

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption2

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.2.5PublicandPrivateAddresses

AssessmentItem:

窗体顶端

WhichthreeIPaddressesareprivate?

（Choosethree.）

172.168.33.1

10.35.66.70

192.168.99.5

172.18.88.90

192.33.55.89

172.35.16.5

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option2,Option3,andOption4arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

CCNAExploration:

NetworkFundamentals

∙6.2.2CalculatingNetwork,HostsandBroadcastAddresses

AssessmentItem:

窗体顶端

GiventheIPaddressandsubnetmaskof172.16.134.64255.255.255.224,whichofthefollowingwoulddescribethisaddress?

Thisisauseablehostaddress.

Thisisabroadcastaddress.

Thisisanetworkaddress.

Thisisnotavalidaddress.

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption3

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.4.2ANDing-WhatIsInOurNetwork?

AssessmentItem:

窗体顶端

ArouterinterfacehasbeenassignedanIPaddressof172.16.192.166withamaskof255.255.255.248.TowhichsubnetdoestheIPaddressbelong?

172.16.0.0

172.16.192.0

172.16.192.128

172.16.192.160

172.16.192.168

172.16.192.176

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption4

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.5.2Subnetting-DividingNetworksintoRightSizes

AssessmentItem:

窗体顶端

Refertotheexhibit.ThenetworkadministratorhasassignedtheinternetworkofLBMISSanaddressrangeof192.168.10.0.Thisaddressrangehasbeensubnettedusinga/29mask.Inordertoaccommodateanewbuilding,thetechnicianhasdecidedtousethefifthsubnetforconfiguringthenewnetwork（subnetzeroisthefirstsubnet）.Bycompanypolicies,therouterinterfaceisalwaysassignedthefirstusablehostaddressandtheworkgroupserverisgiventhelastusablehostaddress.Whichconfigurationshouldbeenteredintotheworkgroupserver'spropertiestoallowconnectivitytothenetwork?

IPaddress:

192.168.10.38subnetmask:

255.255.255.240defaultgateway:

192.168.10.39

IPaddress:

192.168.10.38subnetmask:

255.255.255.240defaultgateway:

192.168.10.33

IPaddress:

192.168.10.38subnetmask:

255.255.255.248defaultgateway:

192.168.10.33

IPaddress:

192.168.10.39subnetmask:

255.255.255.248defaultgateway:

192.168.10.31

IPaddress:

192.168.10.254subnetmask:

255.255.255.0defaultgateway:

192.168.10.1

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption3

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.3.3AssigningAddressestoOtherDevices

AssessmentItem:

窗体顶端

WhichofthefollowingnetworkdevicesarerecommendedtobeassignedstaticIPaddresses?

（Choosethree.）

LANworkstations

servers

networkprinters

routers

remoteworkstations

laptops

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option2,Option3,andOption4arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

CCNAExploration:

NetworkFundamentals

∙6.3.6OverviewofIPv6

AssessmentItem:

窗体顶端

WhichofthefollowingarefeaturesofIPv6?

（Choosethree.）

largeraddressspace

fasterroutingprotocols

simplifiedheaderformat

authenticationandencryption

improvedhostnamingconventions

sameaddressingschemeasIPv4

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option1,Option3,andOption4arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

3

CCNAExploration:

NetworkFundamentals

∙6.3.6OverviewofIPv6

AssessmentItem:

窗体顶端

WhatistheprimaryreasonfordevelopmentofIPv6?

security

headerformatsimplification

expandedaddressingcapabilities

addressingsimplification

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption3

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.6.5ICMPv4-TheProtocolSupportingTestingandMessaging

AssessmentItem:

窗体顶端

WhattwothingswillhappenifarouterreceivesanICMPpacketwhichhasaTTLvalueof1andthedestinationhostisseveralhopsaway?

（Choosetwo.）

Therouterwilldiscardthepacket.

TherouterwilldecrementtheTTLvalueandforwardthepackettothenextrouteronthepathtothedestinationhost.

Therouterwillsendatimeexceededmessagetothesourcehost.

TherouterwillincrementtheTTLvalueandforwardthepackettothenextrouteronthepathtothedestinationhost.

TherouterwillsendanICMPRedirectMessagetothesourcehost.

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

Option1andOption3arecorrect.

1pointforeachcorrectoption.

0pointsifmoreoptionsareselectedthanrequired.

2

CCNAExploration:

NetworkFundamentals

∙6.6.1Ping127.0.0.1-TestingtheLocalStack

AssessmentItem:

窗体顶端

Refertotheexhibit.Whywouldtheresponseshownbedisplayedafterissuingthecommandping127.0.0.1onaPC?

TheIPsettingsarenotproperlyconfiguredonthehost.

InternetProtocolisnotproperlyinstalledonthehost.

Thereisaproblematthephysicalordatalinklayer.

Thedefaultgatewaydeviceisnotoperating.

Arouteronthepathtothedestinationhosthasgonedown.

窗体底端

窗体顶端

Reset

窗体底端

Observable

Description

MaxValue

1

correctnessofresponse

2pointsforOption2

0pointsforanyotheroption

2

CCNAExploration:

NetworkFundamentals

∙6.1.1TheAnatomyofanIPv4Address

AssessmentItem:

窗体顶端

HowmanybitsmakeupanIPv4add