IntroductionCHAPTER 1:Standard Internetworking ModelsIntroductionWhat Is an Internetwork?Types of InternetworksLocal Area Network (LAN)Metropolitan Area Network (MAN)Wide Area Network (WAN)Storage Area Network (SAN)Virtual Private Network (VPN)Open Systems Interconnection (OSI) ModelUpper LayersApplication LayerPresentation LayerSession LayerLower LayersTransport LayerNetwork LayerData Link LayerPhysical LayerOSI Layered CommunicationsTCP/IP ModelApplication LayerTransport LayerInternet LayerNetwork Interface LayerCisco 3-Layer Hierarchical ModelAccess LayerDistribution LayerCore LayerChapter SummaryKey TermsApply Your KnowledgeExerciseReview QuestionsExam QuestionsAnswers to Review QuestionsAnswers to Exam QuestionsSuggested Readings and ResourcesCHAPTER 2:Physical Layer Networking ConceptsIntroductionNetwork TopologiesThe Bus TopologyThe Ring TopologyThe Star TopologyThe Mesh TopologyCablingCoaxial CableTwisted-Pair CableFiber-Optic CableWirelessWireless Fidelity (Wi-Fi)InfraredBluetoothPhysical Layer DevicesRepeatersHubsNetwork InterfacesChapter SummaryKey TermsApply Your KnowledgeExerciseReview QuestionsExam QuestionsAnswers to Review QuestionsAnswers to Exam QuestionsSuggested Readings and ResourcesCHAPTER 3:Data Link Networking ConceptsIntroductionData Link ProtocolsToken RingFDDIEthernet at the Data Link LayerPhysical Ethernet StandardsEthernetFast EthernetGigabit Ethernet10-Gigabit Ethernet (10GbE)Long Reach EthernetData Link Layer DevicesBridgesSwitchesDuplexMicrosegmentationChapter SummaryKey TermsApply Your KnowledgeExerciseReview QuestionsExam QuestionsAnswers to Review QuestionsAnswers to Exam QuestionsSuggested Readings and ResourcesCHAPTER 4: General Network SecurityIntroductionClasses of AttackAccess AttacksReconnaissance AttacksDenial of Service (DoS) AttacksMitigating Network ThreatsAAACisco ACLsCisco IOS Secure Management FeaturesEncryption ProtocolsSecurity Appliances and ApplicationsChapter SummaryKey TermsApply Your KnowledgeExerciseReview QuestionsExam QuestionsAnswers to Review QuestionsAnswers to Exam QuestionsSuggested Readings and ResourcesCHAPTER 5:IP at the Network LayerIntroductionNetwork Layer FunctionsIP Addressing and FormatsBinaryHexadecimalIP Address ClassesSubnet MasksPrivate (RFC 1918) AddressingSubnetting IPCalculating Hosts in a SubnetCalculating Networks in a SubnetThe IncrementDetermining the Range of Valid IPsIPv6IPv6 CommunicationsIPv6 Address FormatTypes of IPv6 AddressesAutoconfigurationIntegrating IPv4 and IPv6ICMPv6Network Layer DevicesRoutersLayer 3 SwitchesChapter SummaryKey TermsApply Your KnowledgeExercisesReview QuestionsExam QuestionsAnswers to Review QuestionsAnswers to Exam QuestionsSuggested Readings and ResourcesCHAPTER 6: In.