资源描述：
《网络技术试题详解.doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、Accesslist1-99IPstandard100-199IPextended200-299Protocoltypecode300-399DECnetaccesslist400-499XNSStandardAccess500-599XNSExtendedAccess600-699AppleTalk700-79948bitMACaddress800-899IPX900-999IPXExtended1000-1099IPXSAP1100-1199Extended48bitMACaddress1200-1299IP
2、XsummaryaddressPortnumbersTCP=6UDP=17FTP=21TELNET=23SMTP=25DNS=53TFTP=69SNMP=161NOVELIPXFrameTypeInterfaceNovellFrameTypeCiscoKeywordEthernetEthernet802.3andNetWare3.11NovellEtherIPXEthernetEncapsulationEthernet802.2andNetWare3.12SAPEthernetIIARPA,DECnetandsu
3、pportsTCP/IP,IPXandupperlayersEthernetSNAPSNAP,AppleTalk,IPX,andTCP/IPTokenRingTokenRing802.SAPTokenRingSNAPSNAPFDDIFDDISNAPSNAPFDDI802.2SAPFDDIRAWNOVELL-FDDIDODmodelIPDODProtocolAppliestion，Present且tion,SessionProcessApplicationTelnet,FTP,LPD,SNMP,TFTP,SMTP,
4、NFS,XWINDOWTransportHosttoHostTCP,UDPNetworkInternetICMP,BOOTP,ARP,RARP,IPDataLinkNetworkAccessEthernet,FastEthernet,TokenRing,FDDIIPXProtoclStack:Application,Presentation,Session?/span>RIP,SAP,NCP,NLSP,etc•••Transport?/span>IPX,SPXNetwork?/span>IPXDatalink?/
5、spa.n>ODLOpenDataLinkPhysical?/span>whateverOSIModel:TransportisTCPSegmentsNetworkisIPPackets/DatagramsDataLinkisEthernetframesPhysicalisBitsThefivestepstoEncapsulation:1.Buildthedata2.Packagedataforend一to一endtransport(Segmentstransportsubsystem)3.Appendnetwo
6、rkaddressinheader(dataisputintoapacketordatagram)Network4.Appendlocaladdressindatalinkheader(mustbeputintoaframeorpacket)Data5.Converttobitsfortransmission1and0PhysicalData>Segment>Packet>Frame>BitsDataEncapsulationMethod1.Userinformationisconvertedtodatafort
7、ransmissiononthenetwork.2.Dataisconvertedtosegmentsandpackagedwithcontrolinformationforareliableconnection.3.Segmentsareencapsulatedwithanetworkheaderandconvertedtopacketsordatagrams,whichspecifythesourceanddestinationlogicaladdresses.4.Packets,ordatagrams,ar
8、econvertedtoframestoallowaconnectionoveraninterfacetothenetwork.5.Framesareconvertedtobitswithsomeclockingfunctionstoallowtransmissionamedium.KeyTerms:Bits:ThePhysicallayertakesthebinaryd
