How computer networks and the Internet work

Technologies and protocols underlying Internet communications allow you to transmit data between billions of devices around the world. This book removes the veil of secrets from amazing architecture and protocols, thanks to which devices can exchange data on the network. Despite all its complexity, the Internet is actually based on several relatively simple concepts that everyone can familiarize with.
Today, networks and network applications have become an integral part of our life, so it is extremely important to understand how these technologies work. To study the book, the reader does not need technical knowledge - it is written on an ordinary Internet user interested in the global network