CWNA Guide to Wireless LANs PDF
Preview CWNA Guide to Wireless LANs
CWNA Guide to Wireless LANs Third Edition By Mark Ciampa, Ph.D. Australia(cid:129)Brazil(cid:129)Japan(cid:129)Korea(cid:129)Mexico(cid:129)Singapore(cid:129)Spain(cid:129)UnitedKingdom(cid:129)UnitedStates Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. CWNAGuidetoWirelessLANs,ThirdEdition ©2013CourseTechnology,CengageLearning MarkCiampa ALLRIGHTSRESERVED.Nopartofthisworkcoveredbythecopyright hereinmaybereproduced,transmitted,storedorusedinanyform VicePresident,Careers&Computing:DaveGarza orbyanymeansgraphic,electronic,ormechanical,includingbut ExecutiveEditor:StephenHelba notlimitedtophotocopying,recording,scanning,digitizing,taping, AcquisitionsEditor:NickLombardi Webdistribution,informationnetworks,orinformationstorageand retrievalsystems,exceptaspermittedunderSection107or108 ManagingEditor:MarahBellegarde ofthe1976UnitedStatesCopyrightAct,withoutthepriorwritten SeniorProductManager:MichelleRuelos permissionofthepublisher. Cannistraci DevelopmentalEditor:AnnShaffer Forproductinformationandtechnologyassistance,contactusat EditorialAssistant:SarahPickering CengageLearningCustomer&SalesSupport,1-800-354-9706. 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Brief Contents INTRODUCTION . .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... xiii CHAPTER 1 TheWorldof Wireless . ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... .. 1 CHAPTER 2 WirelessLocalAreaNetworks ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... . 35 CHAPTER 3 RadioFrequencyFundamentals .. .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... . 79 CHAPTER 4 Antennas ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 119 CHAPTER 5 PhysicalLayerStandards .. .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 157 CHAPTER 6 MediaAccessControlLayerStandards.. ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 197 CHAPTER 7 WLANManagementandArchitectures . ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 241 CHAPTER 8 ConductingaSiteSurvey.. .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 277 CHAPTER 9 WirelessLANSecurityVulnerabilities... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 317 CHAPTER 10 ImplementingWireless LANSecurity ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 353 CHAPTER 11 ManagingaWirelessLAN . .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 391 CHAPTER 12 WirelessNetwork TroubleshootingandOptimization . .. ... .. ... ... .. ... ... .. ... ... .. ... 425 CHAPTER 13 OtherWireless Networks.. .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 461 APPENDIX A CWNACertificationExamObjectives... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 495 APPENDIX B URLsforHands-On Projects .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 505 APPENDIX C WirelessWebSites. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... 509 GLOSSARY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525 iii Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Table of Contents INTRODUCTION . .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... xiii CHAPTER1 TheWorldof Wireless . ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... .. 1 WirelessApplications.................................................................. 3 Education ....................................................................... 3 Business......................................................................... 5 Industry......................................................................... 5 Travel.......................................................................... 9 PublicSafety .................................................................... 10 HealthCare..................................................................... 11 WirelessAdvantagesandDisadvantages.................................................... 12 Advantages ..................................................................... 12 Disadvantages ................................................................... 16 TypesofWirelessNetworks............................................................ 18 WirelessPersonalAreaNetwork(WPAN) ............................................... 18 WirelessLocalAreaNetwork(WLAN) ................................................. 19 WirelessMetropolitanAreaNetwork(WMAN)........................................... 19 WirelessWideAreaNetwork(WWAN)................................................. 19 ComparisonofWirelessNetworks..................................................... 20 WirelessStandardsOrganizationsandRegulatoryAgencies...................................... 20 InternationalTelecommunicationUnionRadioCommunicationSector(ITU-R) .................... 21 FederalCommunicationsCommission(FCC) ............................................. 22 InternationalOrganizationforStandardization(ISO) ....................................... 22 InstituteofElectricalandElectronicsEngineers(IEEE) ...................................... 23 Wi-FiAlliance ................................................................... 24 CertifiedWirelessNetworkAdministrator(CWNA) ........................................... 25 ChapterSummary ................................................................... 25 KeyTerms ........................................................................ 26 ReviewQuestions ................................................................... 28 Hands-OnProjects .................................................................. 31 CaseProjects....................................................................... 33 CHAPTER2 WirelessLocalAreaNetworks ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... . 35 UnderstandingStandards .............................................................. 37 TheNeedforStandards ............................................................ 37 SourcesofStandards .............................................................. 38 TypesofWirelessLANs............................................................... 39 IEEE802.11-2007 ................................................................ 39 IEEE802.11n-2009 ............................................................... 44 WLANClientHardwareandSoftware .................................................... 45 WirelessClientNetworkInterfaceCard................................................. 45 ClientUtilitySoftware ............................................................. 51 WLANInfrastructureDevices........................................................... 51 AccessPoints(APs) ............................................................... 51 v Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. vi TableofContents WLANBridges .................................................................. 56 Gateways ...................................................................... 59 PoweroverEthernet(PoE)Devices .................................................... 61 ChapterSummary ................................................................... 63 KeyTerms ........................................................................ 64 ReviewQuestions ................................................................... 67 Hands-OnProjects................................................................... 70 CaseProjects....................................................................... 77 CHAPTER3 RadioFrequencyFundamentals . ... .. ... .. ... ... .. ... ... .. ... ... .. ... .. ... ... .. ... .. 79 PrinciplesofRadioFrequency........................................................... 81 WhatAreElectromagneticWaves? .................................................... 82 ElectromagneticWaveCharacteristics .................................................. 82 TheElectromagneticSpectrum ....................................................... 88 RadioFrequencyModulation ........................................................... 91 AnalogModulation ............................................................... 91 DigitalModulation ............................................................... 93 RFSignalStrengthMeasurements ........................................................ 95 Milliwatt(mW) .................................................................. 96 DecibelMilliwatt(dBm)............................................................ 96 ReceiveSignalStrengthIndicator(RSSI)................................................. 98 Percentage...................................................................... 99 Signal-to-NoiseRatio............................................................. 100 RadioFrequencyBehavior ............................................................ 100 PropagationBehaviors ............................................................ 100 ImpactofBehaviors.............................................................. 104 ChapterSummary .................................................................. 105 KeyTerms ....................................................................... 107 ReviewQuestions .................................................................. 109 Hands-OnProjects.................................................................. 112 CaseProjects...................................................................... 116 CHAPTER4 Antennas .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... .. ... ... .. ... . 119 AntennaConcepts .................................................................. 121 WhatIsanAntenna? ............................................................. 121 AntennaMeasurements ........................................................... 123 TypesofAntennas.................................................................. 126 OmnidirectionalAntennas ......................................................... 126 SemidirectionalAntennas .......................................................... 129 Highly-DirectionalAntennas........................................................ 130 AntennaCoveragePatterns............................................................ 131 AzimuthandElevation............................................................ 131 Beamwidth .................................................................... 133 FresnelZone ................................................................... 135 Multiple-InputMultiple-Output(MIMO).................................................. 136 WhatIsMIMO? ................................................................ 137 MIMOSignalProcessingTechniques.................................................. 138 Copyright 2012 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
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