A virtual endpoint for network communication. Different services use specific port numbers, like 80.

Connects multiple wired devices on a network so they can talk to each other.

Converts signals between analog (like cable or phone lines) and digital (like Ethernet). The bridge between your home network and the internet.

Routes data between networks. Most home “routers” are actually routers, switches, and wireless access points in one unit.

A permanent ID number assigned to a device’s network card when it’s manufactured.

A marketing buzzword for services provided over the internet, rather than locally on your device.

Watching a video or listening to audio in “real-time”, as it’s sent to you, rather than downloading first.

A lightweight markup language for formatting plain text. Used all over the web, including in this article!

Scalable Vector Graphics. An XML-based image format that can scale to any size without pixelation.

Similar to JSON but strives to be even more human-friendly. Great for configuration files.