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What happens when we access Codecademy? How are we able to access the content provided by this course? Networking!

Your device uses a network connection and goes through a series of defined network protocols to send and receive information.

A network is two or more computers or devices that are linked in order to share information.

Our computers and devices are able to communicate due to a large set of standards, much like we have road systems and traffic protocols when we drive a car. These network standards have been built by the community over the decades, and these standards guide engineers and security professionals.

In this lesson, we’ll learn about types of networks, conceptual models to describe all the layers of networking, and important network protocols.

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