https://andyals.com/tags/study-notes/Recent content in Study-Notes on Andy AlsHugoen-usAndy AlsSun, 17 May 2026 00:00:00 +0000https://andyals.com/posts/2026/05/osi-model-lets-get-to-know-it/Sun, 17 May 2026 00:00:00 +0000https://andyals.com/posts/2026/05/osi-model-lets-get-to-know-it/<p>What exactly happens to data that we send over the network, how does it go from a text file on one system to bits on a wire and back to a text file on another system, let&rsquo;s find out!</p> <hr> <h2 id="the-concept">The concept</h2> <p>It is no easy feat getting data from one system to another, on the other side of the world. Many things need to operate seamlessly for the journey the data is taking to be completed successfully. Fortunately, the overlords of the internet since it was first created (different versions of which date back as far as 1969!) have, over the years, formalized many standards which we use today. These standards ensure that all different kinds of systems are able to send and receive data from the internet and decode it into something they can read and use.</p>