ccnaicnd40s02l-免費(fèi)閱讀
【正文】 169。 1999, Cisco Systems, Inc. 21 Chapter 2 Interworking Concepts Overview ICND—23 Objectives On pletion of this chapter, you will be able to perform the following tasks: ? Describe how data traffic is exchanged between source and destination devices ? Identify the roles and functions of a hub, switch, and router, and where they best fit in the work ? Select the appropriate Cisco equipment for a given set of work requirements ICND—24 Defining Components of the Network Main Office Branch Office Home Office Mobile Users Inter ICND—25 WAN Connection Types Leased Line Synchronous serial Telephone Company Circuitswitched Asynchronous serial, ISDN Layer 1 Service Provider Packetswitched Synchronous serial ICND—26 Virtual Private Networks (VPN) ICND—27 Why Have VPNs? ICND—28 Virtual Private Networking ICND—29 VPN Tunnels and Encryption ICND—210 Cisco VPN Solution Ecosystem ICND—211 VPN Protocols ICND—212 Defining the Components of a Network (cont.) Floor 2 Floor 1 Server Farm Branch Office Telemuter ISDN Remote Campus ICND—213 Cisco Enterprise Architecture ICND—214 Network Structure Defined by Hierarchy Distribution Layer Core Layer Access Layer ICND—215 End station entry point to the work Access Layer Access Layer Characteristics ICND—216 ? Access Layer Aggregation Point ? Routes traffic ? Broadcast/Multicast Domains ? Media Translation ? Security ? Possible point for remote access Distribution Layer Distribution Layer Characteristics ICND—217 Core Layer Characteristics ? Fast transport to enterprise services ? No packet manipulation Core Layer ICND—218 Campus Inf
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