Most people connect to at least two networks every day. After you turn on a computer or mobile device, it connects to a local WiFi network, which in turn provides access to the interconnected network of networks that is “the internet” (a combination of the words interconnected networks).
But how do networks actually work? How does your device know how to find the internet, a shared printer, or a file share? How do these things know how to respond to your device? What tricks do system administrators use to optimize the performance of a network?
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