🌐 The Internet: How It Works and Why It Matters

"The Internet is a system that allows devices worldwide to share information instantly."

Why the Internet Matter-

• Communication (Email, WhatsApp, Video Calls)

• Information sharing (Google, Wikipedia)

• Online services (Banking, Shopping)

• Education & remote work

• Entertainment (YouTube, Netflix)

Components of the Web

• Chrome

• Firefox

Safari

Web Server

• Apache

• Nginx

  🧠 Understanding the Backbone of the Internet

  1️⃣ IP Addresses (Internet Protocol)

  Example- 192.168.1.1

  2️⃣ Domain Names

  Humans prefer names, not numbers.

  Example- google.com

  3️⃣ Routing (How Data Travels)

Routers

• Routers direct data packets

• Choose fastest and safest route

Packet Switching

• Data is broken into small packets

• Each packet may take a different path

• Reassembled at destination

  Full Internet Communication Flow

  Your Device

  ↓

  ISP

  ↓

  Router Network

  ↓

  DNS

  ↓

  Server

  ↓

  Back to Your Device

🔐 Security & Protocols