A network is a group of connected computers, devices, or systems that communicate and share data with each other. Networks enable the transfer of information, resources, and services through wired or wireless connections.
In information technology, networks are essential for internet access, communication, cloud services, and data sharing between devices and servers. Networks can range from small local connections to large global systems like the Internet.
For example:
- Computers in an office share files and printers through a local network.
- Smartphones connect to the internet using a Wi-Fi network.
- Banks use secure networks to process financial transactions between branches.
- Cloud servers communicate with applications through network infrastructure.
Common technologies and concepts related to networks include:
- LAN (Local Area Network)
- WAN (Wide Area Network)
- Wi-Fi
- Routers & Switches
- IP Address
- DNS
- TCP/IP Protocols
- Network Security
- Internet Infrastructure