华为认证网络工程师01 网络基础知

1.................................................................................................................................................1-11.1.........................................................................................................................................................1-11.2.........................................................................................................................................................1-21.2.1...........................................................................................................................................1-21.2.2LANWAN............................................................................................................................................1-61.2.3................................................................................................................................1-151.3OSI.................................................................................................................................................1-171.3.1OSI.....................................................................................................................1-171.3.2.................................................................................................................................................1-221.3.3.........................................................................................................................................1-241.3.4.................................................................................................................................................1-281.3.5.................................................................................................................................................1-341.3.6..............................................................................................................1-391.4................................................................................................................................................................1-40Issue4.01-111.1zzzISOOSIOSIIssue4.01-21.21.2.1SOHOServerIPHotelIntranetnetworkprotocolcomputernetworkITWAPWirelessApplicationProtocolPDAPersonnalDigitalAssistatezzIssue4.01-3serverzloadbalancingdistributedprocessingICPInternet’s–1970’s1970’s–1980’s1980’s–hostserialIBMSNASystemNetworkArchitectureIBMX.25ARPANETpacketswitchingInternetLANLocalAreaNetworkTCP/IPIPX/SPXTCP/IPIssue4.01-61.2.2LANWANLANLANzLANmodemzzstandardMANMetropolitanAreaNetworkz-LANLocalAreaNetworkstandardIEEE802.XLANEthernetATMAsynchronousTransferModeLANIssue4.01-7LANLANzLANÎÎÎÎÎHUBATMLANLANcablefibertwistedpairNICNetworkInterfaceCardHubSwitchSwitchedHubSharedHubRouterOSIIssue4.01-8ATMATMSwitchATMATMIssue4.01-9zWANzWANÎPSTNÎISDNÎDDNÎX.25ÎFrameRelayÎATMWANCHINAPACCHINADDNCERnetCHINANETWANendsystemPSTNPublicSwitchedTelephoneNetworkPSTNISDNIntegratedServiceDigitalNetworkISDNBRI2B+DB64Kbps128kbpsISDNPRI30BD23BDISDNISDNLeasedLineDDN64kbps2.048MbpsX.259600bps2MbpsIssue4.01-10FrameRelayX.2564kbps2.048MbpsCIRCommitedInformationRateATMAsynchronousTransferModeATMATMIssue4.01-11WANWANzÎÎzÎÎWANcircuitswitchingpacketswitchingPSTN/ISDNATMIssue4.01-12WANWANzWANÎÎzÎÎModem/CSU/DSUISPRouterRoutingModemModemX.25PSTNIssue4.01-13zz10M100M1000MzzbandwidthdelayLANWANbandwidthbpsbitpersecond84210M100M1000MModem56kbpsISDNBRI128KbpsE1/PRI2MbpsE334MbpsOC-3155MbpsOC-12622MbpsOC-482.5GbpsOC-19210GbpsdelaypropagationdelayswitchingdelayaccessdelayqueuingdelayIssue4.01-14zÎÎtopologyLANbusstarLANWANFullmeshedIssue4.01-151.2.3zISOzIEEEzANSIzEIA/TIAzITUzINTERNETIABISOInternationalOrgnizationforStandardizationInternetISOOSIOSIIEEEInstituteofElectricalandElectronicsEngineersIEEELANLAN802.X802.3802.4TokingBus802.5TokingRing802.11WLANANSIAmericanNationalStandardsInstituteANSIFDDIEIA/TIAElectronicIndustriesAssociation/TelecommIndustriesAssociationRS232CAT5HSSIV.24EIA/TIA568BIssue4.01-16ITUInternationalTelecommUnionX.25FrameRelayINTERNETIABInternetArchitectrueBoardIETFIRTFIANAINTERNETIssue4.01-171.3OSI1.3.1OSIOSIOSIzOSIRMOpenSystemInterconnectionReferenceModel!2060IBMSNANovellIPX/SPXAppleAppleTalkDECDECnetTCP/IPISO1984OSIRMOpenSystemInterconnectionReferenceModelOSIOSI1234Issue4.01-18z1234567::OSIPhysicallayerdatalinklayernetworklayertransportlayersessionlayerpresentationlayerapplicationlayerOSIlowerlayerMediaLayerOSIupperlayerhostlayerOSI12345OSIOSIIssue4.01-191234567channelduplexOSIIssue4.01-20zHostAHostBAPDUPPDUSPDUSegmentPacketFrameBit------PDUProtocolDataUnitAPDUApplicationProtocolDataUnitPPDUPresentationProtocolDataUnitSPDUSessionProtocolDataUnitsegmentpacketframebitOSISAPServiceAccessPointE-mailTelnetE-mailIssue4.01-