December 05, 2025

Computer Networks, Global Edition

21 minutes

A comprehensive overview of computer networking principles and technologies. The text explores foundational concepts such as gateways, routers, and network layers, alongside detailed examples of various networks like the Internet (including ARPANET's history and evolution of traffic), mobile phone networks (1G-5G), and wireless LANs (IEEE 802.11). It also addresses crucial aspects of network design including protocols, error correction, flow control, congestion management, quality of service, and security (covering cryptography, DDoS attacks, and firewalls). Furthermore, the material discusses physical layer technologies like twisted pair, coaxial, and fiber optic cables, and delves into application-layer topics such as DNS, email (SMTP), the World Wide Web (HTTP, caching, streaming), and peer-to-peer networks (Napster, CDNs), culminating in an examination of social issues related to networking like privacy and freedom of speech.

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