10. Basics of Computer Networking
What is a Computer Network?
A computer network is a collection of interconnected devices such as computers, servers, printers, and mobile devices that communicate with each other using communication channels.
- Enables data sharing
- Allows resource sharing
- Supports communication
Types of Computer Networks
LAN (Local Area Network)
A LAN connects computers within a small geographical area such as a home, school, or office.
MAN (Metropolitan Area Network)
A MAN covers a city or a large campus and connects multiple LANs.
WAN (Wide Area Network)
A WAN covers a large geographical area such as countries or continents. The Internet is the best example of a WAN.
| Network Type | Coverage Area | Example |
|---|---|---|
| LAN | Small area | Office network |
| MAN | City | City-wide network |
| WAN | Large area | Internet |
Networking Devices
- Router: Connects different networks
- Switch: Connects devices within a LAN
- Hub: Basic device to connect computers
- Modem: Connects a network to the Internet
- Access Point: Provides wireless connectivity
Network Topology
Network topology refers to the physical or logical arrangement of devices in a network.
- Bus Topology
- Star Topology
- Ring Topology
- Mesh Topology
Network Protocols
Network protocols are rules that govern communication between devices on a network.
- TCP/IP: Foundation of the Internet
- HTTP/HTTPS: Used for web communication
- FTP: Used for file transfer
- SMTP: Used for sending emails
Advantages of Computer Networking
- Resource sharing
- Fast communication
- Centralized data management
- Cost efficiency
Applications of Computer Networking
- Internet and email services
- Online education
- Cloud computing
- Banking and financial systems
- Artificial Intelligence systems
Computer networking forms the backbone of modern digital communication. From simple file sharing to advanced cloud computing and AI-based systems, networking plays a crucial role in today’s world. Understanding networking basics is essential for students pursuing careers in IT, Computer Science, and Artificial Intelligence.