Emmett Dulaney (CompTIA Network+, Cloud+, Security+, A+, and others) has been the author of several books on certifications and operating systems over the past 25 years. He is a columnist for Certification Magazine and a professor at a small university in Indiana. He is currently the editor of a journal devoted to business education (and the business of education).

• IntroductionCHAPTER 1 Networking Models, Ports, Protocols, and ServicesThe OSI Networking ModelThe OSI Seven-Layer ModelComparing OSI to the Four-Layer TCP/IP ModelIdentifying the OSI Layers at Which Various Network Components OperateData Encapsulation/Decapsulation and OSIPorts, Protocols, Services, and Traffic TypesConnection-Oriented Protocols Versus Connectionless ProtocolsInternet ProtocolTransmission Control ProtocolUser Datagram ProtocolInternet Control Message ProtocolIPsecGeneric Routing EncapsulationFile Transfer Protocol (FTP)Secure File Transfer Protocol (SFTP)Secure Shell (SSH)TelnetSimple Mail Transfer Protocol (SMTP)Domain Name System (DNS)Dynamic Host Configuration Protocol (DHCP)Trivial File Transfer Protocol (TFTP)Hypertext Transfer Protocol (HTTP)Network Time Protocol (NTP)Simple Network Management Protocol (SNMP)Lightweight Directory Access Protocol (LDAP)Hypertext Transfer Protocol Secure (HTTPS)Server Message Block (SMB)SyslogSimple Mail Transfer Protocol Secure (SMTPS)Lightweight Directory Access Protocol over SSL (LDAPS)Structured Query Language (SQL) ServerRemote Desktop Protocol (RDP)Session Initiation Protocol (SIP)Understanding Port FunctionsTraffic TypesWhat’s Next?CHAPTER 2 Network Topologies, Architectures, and TypesNetwork TopologiesStar/Hub and SpokeMesh TopologyHybrid TopologyPoint to PointSpine and LeafThree-Tier Hierarchical ModelCollapsed CoreTraffic FlowsOlder Topologies: Bus and RingWhat’s Next?CHAPTER 3 Network Addressing, Routing, and SwitchingIPv4 Network AddressingAn Overview of IPv4IP Address ClassesSubnet Mask AssignmentSubnettingIdentifying the Differences Between IPv4 Public and Private NetworksClassless Interdomain RoutingDefault GatewaysAssigning IP AddressesIdentifying MAC AddressesRouting and Switching TechnologiesThe Default GatewayRouting TablesStatic RoutingDefault RouteSwitching MethodsDynamic RoutingRoute SelectionAddress TranslationFirst Hop Redundancy Protocol (FHRP)Virtual IPSubinterfacesVirtual Local-Area NetworksInterface Configuration and Switch ManagementVoice VLANTrunkingThe Spanning Tree Protocol (STP)Maximum Transmission Unit (MTU)Network ServicesDynamic Host Configuration ProtocolThe DHCP ProcessDHCP and DNS SuffixesDHCP Relays and IP HelpersDomain Name Service (DNS)The DNS NamespaceTypes of DNS EntriesDNS RecordsDNS in a Practical ImplementationTime ProtocolsWhat’s Next?CHAPTER 4 Network ImplementationsCommon Networking DevicesRouterSwitchFirewallIDS/IPSLoad BalancerProxy ServerNetwork-Attached Storage (NAS)Storage-Area NetworksWireless Access PointWireless LAN ControllerApplications/Content Delivery NetworkVPNsQuality of ServiceTime To Live (TTL)Networking Use CasesSoftware-Defined NetworkingVirtual Extensible Local-Area Network (VXLAN)Zero Trust Architecture (ZTA)Secure Access Secure Edge (SASE)/Security Service Edge (SSE)Infrastructure as Code (IaC)IPv6 AddressingComparing IPv4 and IPv6 AddressingWhat’s Next?CHAPTER 5 Cabling Solutions and IssuesGeneral Media ConsiderationsBroadband Versus Baseband TransmissionsSimplex, Half-Duplex, and Full-Duplex ModesData Transmission RatesWired Versus WirelessTypes of Wired Network MediaTypes of Media ConnectorsMedia Couplers/ConvertersTIA/EIA 568A and 568B Wiring StandardsStraight-Through Versus Crossover CablesRollover and Loopback CablesEthernet Copper and Fiber StandardsMultiplexing OptionsTroubleshooting Common Cable Connectivity IssuesLimitations, Considerations, and IssuesThroughput, Speed, and DistanceCabling Specifications/LimitationsCabling ConsiderationsCabling IssuesSignal DegradationInterferenceImproper TerminationIncorrect PinoutBad PortsOpen/ShortLED Status IndicatorsDuplexing IssuesTX/RX ReversedDirty Optical CablesInterface IssuesHardware IssuesPower over Ethernet IssuesTransceiver IssuesCommon ToolsCable Crimpers, Strippers, and Snips/CuttersPunchdown ToolsTone GeneratorLoopback AdapterTDR/OTDRMultimeterCable TesterWire MapTapFusion SplicerSpectrum AnalyzerFiber Light MeterWhat’s Next?CHAPTER 6 Wireless SolutionsUnderstanding Wireless BasicsWireless Channels and FrequenciesSpeed, Distance, and BandwidthChannel BondingMIMO/MU-MIMO/Directional/OmnidirectionalNetwork TypesEstablishing Communications Between Wireless DevicesGuest NetworksConfiguring the Wireless ConnectionAutonomous and Lightweight Access PointsWhat’s Next?CHAPTER 7 Cloud Computing Concepts and OptionsCloud ConceptsService ModelsSoftware as a ServicePlatform as a ServiceInfrastructure as a ServiceDeployment ModelsPrivate CloudPublic CloudHybrid CloudMultitenancyElasticityScalabilityNetwork Functions Virtualization (NFV)Cloud Connectivity OptionsVirtual Private Cloud (VPC)Cloud GatewaysNetwork Security, Groups, and ListsWhat’s Next?CHAPTER 8 Network OperationsPhysical Installation FactorsComponents of Wiring DistributionUsing Uninterruptible Power SuppliesBeyond the UPSEnvironmental FactorsOrganizational Processes and ProceduresWiring and Port LocationsPhysical and Logical Network DiagramsBaseline/Golden ConfigurationsPolicies, Procedures, Configurations, and RegulationsLabelingMonitoring Network PerformanceCommon Performance MetricsSNMPNetwork Performance, Load, and Stress TestingNetwork Device LogsDisaster Recovery and High AvailabilityBackupsBackup Best PracticesCold, Warm, Hot, and Cloud SitesHigh-Availability Approaches and Recovery ConceptsActive-Active Versus Active-PassiveDR TestingNetwork Access and Management MethodsSite-to-Site VPNClient-to-Site VPNConnection MethodsJump BoxIn-Band Versus Out-of-Band ManagementWhat’s Next?CHAPTER 9 Network SecurityCommon Security ConceptsEncryptionAccess ControlMandatory Access ControlDiscretionary Access ControlRule-Based Access ControlRole-Based Access ControlDefense in DepthSeparation of DutiesDeception Technologies: Honeypots and HoneynetsRADIUS and TACACS+Kerberos AuthenticationLocal AuthenticationLightweight Directory Access ProtocolUsing CertificatesIdentity and Access Management (IAM)Security Assertion Markup Language (SAML)Multifactor Authentication FactorsAuditing and Regulatory ComplianceAdditional Access Control MethodsRisk ManagementPenetration TestingSecurity Information and Event ManagementCommon Networking AttacksDenial-of-Service and Distributed Denial-of-Service AttacksOther Common AttacksVulnerabilities and PreventionApplying Network SecurityDisposing of AssetsSecured Versus Unsecured ProtocolsKey ManagementHardening Best PracticesWireless SecurityWorking with ZonesWhat’s Next?CHAPTER 10 Network TroubleshootingTroubleshooting Steps and ProceduresIdentify the ProblemEstablish a Theory of Probable CauseTest the Theory to Determine the CauseEstablish a Plan of ActionImplement the Solution or EscalateVerify Full System FunctionalityDocument Findings, Actions, Outcomes, and Lessons Learned Throughout the ProcessTroubleshooting Common Networking IssuesCommon ConsiderationsCommon Problems to Be Aware OfHardware FailureNetwork Performance IssuesWireless IssuesSite SurveysFactors Affecting Wireless SignalsTroubleshooting AP CoverageTroubleshooting ToolsTonerCable TesterTapsVisual Fault LocatorWi-Fi AnalyzerProtocol AnalyzerSpeed TesterPort ScannerLLDP and CDPNetFlow AnalyzerTFTP ServerTerminal EmulatorIP ScannerCommand-Line ToolsThe Trace Route Utility (tracert/traceroute)pingARPThe netstat CommandipconfigifconfignslookupdigThe tcpdump CommandThe route UtilitynmapBasic Networking Device CommandsWhat’s Next?Cram SheetOnlineGlossary9780135340837    TOC    7/25/2024

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