Computer networks

• Computer networks refer to interconnected systems of devices that communicate and share data with each other.
• They enable the exchange of information between computers, smartphones, servers, and other digital equipment.
• At their core, networks rely on hardware components such as routers, switches, and cables to establish connections.
• Network protocols, including TCP/IP, define the rules that allow devices to communicate efficiently and reliably.
• Local Area Networks (LANs) connect devices within a small area, while Wide Area Networks (WANs) cover large geographic regions.
• The internet, the world’s largest network, links millions of private, public, academic, and government systems worldwide.
• Wireless technologies, such as Wi-Fi and Bluetooth, provide mobility and flexibility for modern communication.
• Network security is essential to protect data from unauthorized access, cyberattacks, and system failures.
• Cloud computing has transformed networks by enabling remote access to services, storage, and applications.
• Understanding computer networks is fundamental for building reliable IT systems and supporting digital transformation.