1. What is a web server?

A web server is a computer system that stores websites and delivers them to users over the internet.

• How it works:
  • When you type a website address into your browser, your computer sends a request to the web server.
  • The server finds the right files (HTML, CSS, images, etc.) and sends them back to your browser.
  • Your browser then displays the website.
• Examples of web servers: Apache, Nginx, Microsoft IIS.
• Analogy: Imagine a restaurant. The web server is like the kitchen, which prepares the food (web pages) and delivers it to customers (users).

2. What is a network?

A network is a group of connected devices (computers, phones, printers, servers) that can communicate and share resources.

• Types of networks:
  • LAN (Local Area Network): Covers a small area like a home or office.
  • WAN (Wide Area Network): Covers large areas, connecting cities or even countries (the internet is the biggest WAN).
• Analogy: A network is like a road system that connects houses. People (data) travel along the roads to reach each other.

3. What is the internet?

The internet is the world’s largest network — a "network of networks."

• It connects millions of computers and devices worldwide using standard rules called protocols (like TCP/IP).
• It allows sharing of information (websites, emails, videos, etc.).
• It is not owned by one single person or company, but is maintained by many organizations worldwide.
• Analogy: The internet is like a global postal system, where everyone follows the same addressing and delivery rules.

4. What is an IP address?

An IP address (Internet Protocol address) is a unique number assigned to each device on a network.