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This chapter has defined scalability
and provided examples of Cisco IOS features that enable you to grow
your network successfully. You learned, for example, that knowing
where the router is located in the hierarchy and what the key needs
are for a given layer make it easier for you to configure the router
to meet the specific needs of the layer. Recall that the key
characteristics of a scalable network are reliability and
availability, responsiveness, efficiency, adaptability, and being
accessible but secure. You will see these same concepts discussed
again and again as you make your way through this semester.
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