Chapter 9. Understanding your Network and its Configuration
Networking is the practice of connecting computers and sending data between them. That sounds simple enough, but to understand how it works, you need to ask two fundamental questions:
How does the computer sending the data know where to send its data?
When the destination computer receives the data, how does it know what it just received?
A computer answers these questions by using a series of components, with each one responsible for a certain aspect of sending, receiving, and identifying data. The components are arranged in groups that form network layers, which stack on top of each other ...
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