Introduction to Computer Networks What is a Computer Network? A computer network is a collection of interconnected devices that can communicate and share data with each other. These devices may include: Desktop computers Laptops Smartphones Servers Printers Routers Switches The connection between devices can be established using: Wired media → cables such as Ethernet or fiber optics Wireless media → Wi-Fi, Bluetooth, cellular communication, etc. Simple Definition A computer network is the interconnection of devices capable of exchanging information. Why Do We Need Computer Networks? Computer networks are used to: Share Resources Printers Files Internet connection Enable Communication Email Video conferencing Messaging Share Data Databases Cloud storage Multimedia content Improve Reliability and Efficiency Backup systems Distributed processing Example of a Small Network When two computers at home a...
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