What is the Internet?

<aside> ✅ The internet is a vast global network that connects millions of computers, allowing them to share information and communicate with each other instantly.

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• Networks
• Collection of Networks
• Levels: Class → Department → Campus → University → Edu → Region → State → National → Worldwide
• Some Related Protocols:
  • Internet Protocol
  • Transmission Control Protocol
  • Hyper text Transfer Protocol

What is a Server?

<aside> ✅ A server is a powerful computer that provides data, services, or resources to other computers over a network.

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For Example:

• Web Server: Hosts websites and delivers web pages to browsers (e.g., Apache, Nginx).
• Email Server: Manages and stores emails (e.g., Microsoft Exchange, Gmail servers).
• File Server: Stores and provides access to files for users on a network (e.g., FTP servers, Network Attached Storage).

What is a Client?

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A client is a device or program that requests and uses services or resources from a server.

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For Example:

• Web Browser: Requests and displays web pages from web servers (e.g., Chrome, Firefox).
• Email Client: Accesses and manages emails from email servers (e.g., Outlook, Thunderbird).
• File Transfer Application: Downloads or uploads files from/to file servers (e.g., FileZilla, Windows File Explorer).

Search Engines?

<aside> ✅ Search engines are specialized websites that help users find information on the internet by indexing and retrieving relevant web pages based on user queries.

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