Understanding IP Addressing and Subnetting
A practical, from-scratch guide to IPv4 addresses, subnet masks and CIDR — with worked examples you can follow along.
Tag
Networking
3 articles
How DNS Resolution Works, Step by Step
Follow a single browser request through the full DNS lookup chain, from your local cache to the root servers and back.
TCP vs UDP: Choosing the Right Protocol
A clear comparison of the two core transport protocols — reliability versus speed — and when to reach for each one.