Computer Network (29/1/2026) скачать в хорошем качестве

Computer Network (29/1/2026)

A computer network is a system of interconnected computing devices (nodes) that share data, resources, and services using protocols over wired (fiber, copper) or wireless (radio) connections. Ranging from local area networks (LAN) to the internet, these systems enable communication, file sharing, and remote access, acting as the backbone of modern digital infrastructure. Key Components and Types Components: Devices include computers, servers, and IoT gadgets connected via routers, switches, and access points. Types: LAN (Local Area Network): Covers a small area like a home or office. WAN (Wide Area Network): Spans large distances, such as the internet. MAN (Metropolitan Area Network): Covers a city or campus. Protocols: Rules governing data transmission, including TCP/IP, Ethernet, and Wi-Fi. Core Functions Resource Sharing: Sharing printers, scanners, and storage devices to reduce costs. Communication: Email, video conferencing (e.g., Zoom), and instant messaging. Data Management: Centralized storage, backups, and cloud access. Security: Protection using firewalls, intrusion detection (IDS), and access controls. Evolution Networks have evolved from simple 1940s terminal-to-computer connections to advanced, high-speed, and secure, cloud-native infrastructures.