# Networks
All Networks notes →1 — Why Computer Networks Matter
Why computer networks exist and matter: the evolution of networking, internet architecture, client-server and peer-to-peer models, and how distributed systems and cloud networking build on top of them.
networks networking-fundamentals book
2 — Data Communication Basics
The core data-communication metrics — signals, bandwidth, latency, throughput, jitter, packet loss, serialization delay, and propagation delay — that every later performance discussion depends on.
networks networking-fundamentals book
4 — Network Devices
What NICs, repeaters, hubs, bridges, switches, routers, gateways, firewalls, load balancers, and reverse proxies each actually do, and where each sits in a real network path.
networks networking-fundamentals book