CCNA Discovery 1, Chapter 3
3.1.1 and 3.1.2: Earlier networks provided only a single dedicated and specific service, such as voice communication. The structure of each dedicated network allowed voice communication or video transfer, but not both. Today, newer converged networks can offer voice, video, and data from a single device over the same network. Devices connected to a network allow users to communicate electronically, share resources, and engage in online trade. The Internet is an example of a converged network capable of simultaneous voice, video, and data transmission.
3.3.5: One way to classify the purpose and placement of networking devices is through a hierarchical model. We will revisit network design models on Days 29 and 28. The ...
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