MyTechExp

 Have you ever realized that computers don't actually understand website names? When you type  https://something.com  on your laptop or phone, your computer has no idea where that is. Computers only speak in numbers, specifically  IP Addresses  (like  192.0.2.1 ). The system that translates the human name you know into the numerical address the computer needs is called  DNS (Domain Name System) . Look at the diagram below. It might look like a confusing map of arrows, but it’s actually a very organized treasure hunt. Let’s break down the story of how your request travels through this map using an analogy of trying to find a specific room on a giant school campus. Step 1: The Quick Check (The DNS Cache) Look at the stick figure on the left. That’s you trying to go to  something.com . Before your computer goes out to the internet, it does the equivalent of checking its own pockets. It looks in the  DNS Cache  (that first diamond shape). Th...

 We’ve all been there. You ask an AI chatbot for help, and it confidently tells you something that's... well, completely out of date. "I'm sorry, my knowledge only goes up to 2023." It’s frustrating. These incredible "brains," known as Large Language Models (LLMs), are like the smartest person you’ve ever met. They’ve read almost the entire internet, but they’re stuck in a "closed-book" exam. They don't know what happened yesterday, and they certainly don't know anything about  your  private company documents or your school's homework list. So, how do we fix this? We can't spend millions of dollars retraining these giant models every single day. The answer is surprisingly clever, and it’s called  RAG (Retrieval-Augmented Generation) . Forget the jargon. At its heart, RAG is just a story of a great partnership. Here is that explanation adapted into a blog post with a human, conversational tone. AI's "Brain" is Stuck in ...