You use it every time you open a browser. You’ve probably never heard of it. And when it breaks, the internet breaks.
The internet is not a single network. It’s a vast, chaotic collection of tens of thousands of independent networks — run by ISPs, universities, corporations, cloud providers, and governments — all somehow agreeing to talk to each other. What makes this possible? A single routing protocol called BGP: the Border Gateway Protocol.
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Bluetooth is a short-range wireless communication technology that allows devices to exchange data without the need for cables or an internet connection. Operating on the 2.4 GHz radio frequency band, it enables seamless connectivity between smartphones, headphones, keyboards, medical devices, and countless other gadgets.
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Infrared (IR) data transmission is one of the oldest and most elegant wireless communication technologies — invisible to the human eye, yet quietly powering everything from TV remotes to industrial sensors. While it may seem overshadowed by Wi-Fi and Bluetooth today, infrared remains a remarkably capable and reliable technology with a broad range of applications.
(more…)Every time you open a browser, visit a website, send an email, or stream a video, a complex coordination process takes place behind the scenes between millions of devices around the world. At the heart of this coordination is the IP address — a unique identifier without which the modern internet simply could not exist.
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