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One of the three layers of network design. The main characteristics of the network core are that is should be highly redundant and high performance. As such, it is often one of the simpler layers in that it should not implement any services that impact performance. No user/server connections should be made to a pure network core.
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Understanding the ways of communication in IP networks
--> when user tries to access webpage using URL, request for webpage go to the DNS for Ip resolution, after getting Ip request go through all layers of OSI and reach to the related server and server r …