ccnaicnd40s02l-資料下載頁
【導(dǎo)讀】©1999,CiscoSystems,Inc.2-1. Chapter2. Interworking. ConceptsOverview. ICND—2-3. Objectives. thework. ICND—2-4. DefiningComponents. oftheNetwork. Home. Office. Mobile. Users. Inter. ICND—2-5. WANConnectionTypes. LeasedLine. Synchronousserial. Telephone. Asynchronousserial,ISDNLayer1. Service. Provider. Packet-switched. Synchronousserial. ICND—2-6. ICND—2-7. WhyHaveVPNs?ICND—2-8. ICND—2-9. ICND—2-10. CiscoVPNSolution. Ecosystem. ICND—2-11. VPNProtocols. ICND—2-12. ofaNetwork(cont.). Floor2. Floor1. ServerFarm. Branch. Office. Telemuter. ISDN. RemoteCampus. ICND—2-13. ICND—2-14. Hierarchy. Distribution. Layer. CoreLayer. Access. Layer. ICND—2-15. AccessLayer. ICND—2-16. AccessLayer. AggregationPoint. Routestraffic. Domains. MediaTranslation. Security. DistributionLayer. ICND—2-17. CoreLayer. ICND—2-18. ICND—2-19. ICND—2-20. Model. ICND—2-21. OSIModelOverview. DataFlow. Layers. TransportLayer. DataLink. NetworkLayer. Physical. Application. Layers. Session. Presentation. Application. ICND—2-22. Keepingdifferent. applications’。dataseparate. UserInterface. Howdataispresented. Specialprocessing. suchasencryption. Tel. HTTP. ASCII. EBCDIC. JPEG. OperatingSystem/. ApplicationAccess. Scheduling. TransportLayer. DataLink. NetworkLayer. Physical. EXAMPLES. Session. Presentation. Application. ICND—2-23. TCP. UDP. SPX. /. HDLC. EIA/TIA-232. IP. IPX. Presentation. Application. SessionEXAMPLES. bytesintoframes. Specifiesvoltage,wirespeedand. pin-outcables. Transport. DataLink. Physical. ICND—2-24. Transport. DataLink. Physical. Network. UpperLayerData. DataIPHeader. DataLLCHeader. DataMACHeader. Presentation. Application. Session. Segment. Packet. Bits. Frame. PDU. FCS. FCS. EncapsulatingData. ICND—2-25. UpperLayerData. LLCHdr+IP+TCP+UpperLayerData. IP+TCP+UpperLayerData. TCP+UpperLayerData. UpperLaye
【正文】 ault 00000010 Network Number ICND—241 Routing Table NET INT Metric 1 2 4 S0 S0 E0 1 0 0 E0 S0 E0 S0 Routing Table NET INT Metric 1 2 4 E0 S0 S0 0 0 1 ? Logical addressing allows for hierarchical work ? Configuration required ? Uses configured information to identify paths to works Network Layer Functions (cont.) ICND—242 ? Distinguishes between upper layer applications ? Establishes endtoend connectivity between applications ? Defines flow control ? Provides reliable or unreliable services for data transfer Network IPX IP Transport SPX TCP UDP Transport Layer Functions ICND—243 Reliable Transport Layer Functions Synchronize Acknowledge, Synchronize Acknowledge Data Transfer (Send Segments) Sender Receiver Connection Established ICND—244 Hub Bridge Switch Router Collision Domains: 1 4 4 4 Broadcast Domains: 1 1 1 4 Network Device Domains ICND—245 Summary After pleting this chapter, you should be able to perform the following tasks: ? Describe how data moves through a work ? Identify the roles and functions of routers, switches and hubs, and specify where each device best fits in the work ? Select the appropriate Cisco equipment for a work that bines switching, routing and remote access requirements ICND—246 1. What are some of the advantages of using the OSI model in a working environment? 2. Describe the encapsulation process. 3. How many broadcast and collision domains are on a hub? Review Questions
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