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1、OSINetworkLayer NetworkFundamentals Chapter5 Objectives IdentifytheroleoftheNetworkLayer asitdescribescommunicationfromoneenddevicetoanotherenddeviceExaminethemostcommonNetworkLayerprotocol InternetProtocol IP anditsfeaturesforprovidingconnectionlessandbest effortserviceUnderstandtheprinciplesusedto
2、guidethedivisionorgroupingofdevicesintonetworksUnderstandthehierarchicaladdressingofdevicesandhowthisallowscommunicationbetweennetworksUnderstandthefundamentalsofroutes nexthopaddressesandpacketforwardingtoadestinationnetwork NetworkLayerProtocolsandInternetProtocol IP DefinethebasicroleoftheNetwork
3、Layerindatanetworks NetworkLayerProtocolsandInternetProtocol IP IdentifythebasiccharacteristicsandtheroleoftheIPv4protocol NetworkLayerProtocolsandInternetProtocol IP DescribetheimplicationsfortheuseoftheIPprotocolasitisconnectionless NetworkLayerProtocolsandInternetProtocol IP Describetheimplicatio
4、nsfortheuseoftheIPprotocolasitisconsideredanunreliableprotocol NetworkLayerProtocolsandInternetProtocol IP DescribetheimplicationsfortheuseoftheIPasitismediaindependent NetworkLayerProtocolsandInternetProtocol IP DescribetheroleofframingintheTransportLayerandexplainthatsegmentsareencapsulatedaspacke
5、ts NetworkLayerProtocolsandInternetProtocol IP IdentifythemajorheaderfieldsintheIPv4protocolanddescribeeachfield sroleintransportingpackets GroupingDevicesintoNetworksandHierarchicalAddressing Listseveraldifferentreasonsforgroupingdevicesintosub networksanddefineseveraltermsusedtoidentifythesub netw
6、orks GroupingDevicesintoNetworksandHierarchicalAddressing Listseveralwaysinwhichdividingalargenetworkcanincreasenetworkperformance GroupingDevicesintoNetworksandHierarchicalAddressing Listseveralwaysinwhichdividingalargenetworkcanincreasenetworksecurity GroupingDevicesintoNetworksandHierarchicalAddr
7、essing Explainthecommunicationproblemsthatemergewhenverylargenumbersofdevicesareincludedinonelargenetwork GroupingDevicesintoNetworksandHierarchicalAddressing Describehowhierarchicaladdressingsolvestheproblemofdevicescommunicatingacrossnetworksofnetworks GroupingDevicesintoNetworksandHierarchicalAdd
8、ressing Describethepurposeoffurthersubdividingnetworksintosmallernetworks FundamentalsofRoutes NextHopAddressesandPacketForwarding Describetheroleofanintermediarygatewaydeviceinallowingdevicestocommunicateacrosssub dividednetworks FundamentalsofRoutes NextHopAddressesandPacketForwarding Tracethestep
9、sofanIPpacketasittraversesunchangedviaroutersfromsubnetworktosub network FundamentalsofRoutes NextHopAddressesandPacketForwarding Describetheroleofagatewayandtheuseofasimpleroutetableindirectingpacketstowardtheirultimatedestinations FundamentalsofRoutes NextHopAddressesandPacketForwarding Definearou
10、teanditsthreekeyparts FundamentalsofRoutes NextHopAddressesandPacketForwarding Describethepurposeanduseofthedestinationnetworkinaroute FundamentalsofRoutes NextHopAddressesandPacketForwarding Describethepurposeanduseofthenexthopinaroute FundamentalsofRoutes NextHopAddressesandPacketForwarding Tracet
11、hestepsofseveralIPpacketsastheyareroutedthroughseveralgatewaysfromdevicesononesubnetworktodevicesonothersubnetworks FundamentalsofRoutes NextHopAddressesandPacketForwarding Describethepurposeofroutingprotocolsandtheneedforbothstaticanddynamicroutes FundamentalsofRoutes NextHopAddressesandPacketForwarding Explainhowroutesaremanuallyconfiguredtobuildroutingtable FundamentalsofRoutes NextHopAddressesandPacketForwarding Explaintheroleofroutingprotocolsinbuildingtheroutingtable Summary
