AppendixBWord文档下载推荐.docx

AppendixBWord文档下载推荐.docx

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Thefifthsectioncovers

·

wiredtelecommunicationsmedia（keytermssuchastwisted-paircable,coaxandopticalfiber）

wirelesstelecommunicationsmedia（keytermssuchasinfrared,Bluetooth,microwave,WiFi,repeater,andcommunicationssatellite）.

Thesixthsectiondiscussesprinciplesofnetworkandcomputersecurity,meansofprotectingthem,andthreatsagainstthoseprinciples.Thissectionincludeskeytermssuchasconfidentiality,authenticity,integrity,availability,firewall,intrusiondetectionsystem,virtualprivatenetwork,virus,worm,andspyware.

Thelastsectiondealswithclient/servernetworks,firstfromabusinessviewpointandthenbrieflyfromthepointofviewofphysicalcomponents,includingthekeytermclient/servernetwork.

STUDENTLEARNINGOUTCOMES

1.Identifythefourbasicconceptsonwhichnetworksarebuiltanddescribewhatisneededtosetupasmallpeer-to-peernetworkathome.

2.Describethecomponentsusedtobuildlargebusinessnetworksanddefineandcomparelocalareanetworks（LANs）,wideareanetworks（WANs）,andmetropolitanareanetworks（MANs）.

3.CompareandcontrastthevariousInternetconnectionpossibilities.

4.Statethefourprinciplesofcomputersecurityanddescribehowdifferentnetworksecuritydevicesreflectthoseprinciples.

5.Describeclient/serverbusinessnetworksfromabusinessandphysicalpointofview.

LECTUREOUTLINE

INTRODUCTION（p.361）

1.BasicPrinciplesofNetworks

HOMENETWORKS（p.362）

1.NetworkCardsinEachComputer

2.WiredandWirelessTransmissionMedia

3.HomeInternetServiceandBroadbandRouters

4.NetworkSoftware

NETWORKCOMPONENTS（p.364）

1.Hubs

2.Switches

3.Routers

CLASSIFYINGNETWORKSBYDISTANCE（p.367）

1.LANs,WANs,andMANs

INTERNET（p.368）

1.Bandwidth

2.InternetConnectionTypes

3.VoiceoverIP

NETWORKCOMMUNICATIONSMEDIA（p.375）

1.WiredCommunicationsMedia

2.WirelessCommunicationsMedia

NETWORKSECURITY（p.379）

1.PrinciplesofComputerSecurity

2.FirewallsandIntrusionDetectionSystems

3.EncryptedCommunications:

SSLandVirtualPrivateNetworks

4.OtherSecurityThreats:

Malware

THECLIENT/SERVERSOFTWAREMODEL（p.384）

1.Client/Server:

ABusinessView

ENDOFMODULE（p.390）

1.Summary:

StudentLearningOutcomesRevisited

2.KeyTermsandConcepts

3.Short-AnswerQuestions

4.AssignmentsandExercises

GROUPPROJECTS

14.AssessingaWirelessFuture:

EmergingTrendsandTechnologyUsepresentationsoftwaretodevelopaninsightfulpresentationthatdescribestheinnovativewirelessproductscurrentlyunderdevelopmentbytwomanufacturersp.431

21.EvaluatingtheSecurityofInformation:

WirelessNetworkVulnerabilityUsepresentationsoftwaretoreportonthetips,techniques,andbestpracticestoprotectagainstamateurhacking,suchasthe“PringlesCantenna”p.439

DATAFILES

Therearenodatafilesassociatedwiththischapter.Theremay,however,bedatafilesfortheGroupProjectsyouchoosetouse.

Slide#B-2

∙ThesearetheStudentLearningOutcomesfortheappendix.

∙Usethemasaroadmaptoinformyourstudentsofwhatyouwillbecovering.

∙Attheendoftheappendixisasummaryofeach

Slide#B-3

Slide#B-4

∙ThesearetheStudentLearningOutcomesforthemodule.

∙Attheendofthemoduleisasummaryofeach

Slide#B-5

Thisslidedefinesthetermcomputernetwork.

Stresstostudentsthatnetworkscomeinallsizesfromtwocomputerstoshareaprinter,totheInternetthatjoinsmillionsofcomputerstogether.

Slide#B-6

∙Thisslidepresentsthegraphicatthebottomofpage361.

∙Networkscanconnectpeopleacrossaroomoracrosstheplanet.

Slide#B-7

∙Thisslideandthenextshowthebasicprinciplesofnetworks.

∙Thisslidehasthefirstthreeprinciplesandthenextslideshowsthefourth.

Slide#B-8

∙Thisslidehasthefourthbasicprincipleofnetworks.

∙Theseprinciplesapplytoallnetworks–greatandsmall.

HOMENETWORKS（pp.362-364）

Slide#B-9

∙Thisslideliststhecomponentsyouwouldneedtosetupanetworkathome.

Slide#B-10

∙Thisslidediscussesnetworkinterfacecards.

∙ThecircuitboardphotoistheexpansioncardneededifthecomputerdoesnothaveanNICbuiltintothemotherboard.

∙The3Comboxisforanotebookcomputer,again,onlynecessaryifthenotebookdidn’tcomewithanNICbuiltin.

Slide#B-11

∙ThisslidediscussesCat5cablewhichisthetypeofcableusuallyusedinhomeandsmallofficenetworks.

∙Cat5cableiscommonlyusedfor100Mbpstransmissionsandcansupport1Gbpstransmissionsovershortdistances

∙NewinstallationsuseCat5eorCat6cable,bothofwhichcansupport1Gbpstransmissionsovergreaterdistances.

Slide#B-12

∙Thisslidediscusseswirelesstransmission.

∙Olderwirelessaccesspoints（QAPs）useastandardcalledIEEE802.11b,whichrunsupto11Mbps.

∙Atthetimeofwriting,newerWAPsuseIEEE802.11gwhichrunsupto54Mbpsandiscompatiblewith802.11band802.11a,whichalsorunsupto54Mbpsbutisnotcompatiblewith802.11b.

∙WirelessaccesspointsstillneedanetworkcabletoconnecttotheInternet.

Slide#B-13

∙Thisslidepresentsbroadbandorhomerouters.

∙You’llneedoneofthesetoshareaDSLorcablemodemInternetconnection.

∙Mostmodernbroadbandroutershavebuilt-inswitchestoconnectseveralhomecomputersandprinterstogether.

∙Manybroadbandroutersalsohavebuilt-infirewallcapabilitiestoprotecthomecomputersagainstunauthorizedaccessfromtheInternet.

Slide#B-14

∙Thisslidediscussesnetworkoperatingsoftware.

∙StresstoyourstudentsthatforasmallhomenetworkthatWindowswilldothejob.

∙Remindthestudentsthatyouhavetoturnonthesharingtoenableothercomputersonthenetworktoaccessfilesonyourcomputer.

NETWORKCOMPONENTS（pp.364-366）

Slide#B-15

∙Thisslideintroducesnetworkhardwarecomponents.

∙Ahubisthemostbasictypeofconnectingdevice.

∙Becauseahubsendseverynetworktransmissiontoeverycomputer,onlyonecomputercantransmitatatime.

∙Forthesamereason,networktransmissionsthroughhubsaren’tprivate–theycanbeseenbyeveryothercomputeronthenetwork.

∙Whentwocomputersstarttotransmitatthesametimetheirmessagesgetgarbledtogetherandthentheyhavetostop,wait,andtryagain.

Slide#B-16

∙Thisslidedefinesaswitch.

∙Becausenetworktransmissionstravelbetweenasinglesenderandasinglerecipient,multipleconversationscanhappenbetweendifferentsetsofcomputersatthesametime.

∙Eachmessageisonlydeliveredtotheintendedrecipient,socommunicationsonswitchesaregenerallyprivate.

Slide#B-17

∙Thisslideisthefirstoftwothatdiscussrouters.

∙Routersareusedtoconnectnetworksorsubnetworkstogether.

∙Theyofferalltheadvantagesofswitchesaswellasaddedsecuritysincetheyfunctionasahardwarefirewall.

∙Routersforbusinessestendtobemuchmorecomplicatedthanthehometypesincetheyhavetobeconfiguredwithdetailedinformationaboutthenetworksthey’reconnectionandtheyalsoneedinstructionsonhowtopassdatatoothernetworks.

Slide#B-18

∙Thisisthesecondoftwoslidesonrouters.

∙Corporateroutersdon’tusuallyconnectcomputersdirectly.

∙Inbusinesses,therouterdoesnotperformthetaskofconnectingcomputers,switchesand,toalesserextent,hubsdothatjob.

∙Inhomerouters,thetwofunctionsarecombined.

CLASSIFYINGNETWORKSBYDISTANCE（pp.367-368）

Slide#B-19

∙Thisslideisthefirstoftwothatdiscussnetworksbasedonwhetherthecomputersarelocatedincontiguousareasornot.

∙ThisslidediscussesLANs.

Slide#B-20

∙Thisisthesecondoftwothatdiscussnetworksintermsoftheproximityofcomputerstoeachother.

∙ThisslidediscussesWANsandMANs.

∙Thedistinguishingcharacteristicisnotthesizeofthenetwork,butwhethertheareaitcoversiscontiguous.

INTERNET（pp.368-375）

Slide#B-21

∙ThisslideintroducestheInternetandbeginsasectionon