Imagine sending a 10-page letter by dropping each page into a different mailbox, with no page numbers and no way to know if any arrived. Some pages get lost. Some arrive in the wrong order. Some come
You type google.com and press Enter. Before a single byte of the page arrives, your computer has to answer one question: where is google.com? Computers don’t understand names. They understand IP addre
You open a website, and it loads in under a second. Looks like magic, right? Behind that one click, your request passes through a chain of devices: a modem, a router, a switch, a firewall, and maybe a
