Networking
networking
infrastructure
What is DNS?
Definition
DNS (Domain Name System) translates human-readable domain names (example.com) into IP addresses (93.184.216.34) that computers use to identify each other on the network. It is a hierarchical, distributed naming system.
Why It Matters
DNS is the phonebook of the internet. DNS misconfigurations cause downtime, slow page loads, and email delivery failures. Understanding DNS records (A, CNAME, MX, TXT) is essential for deploying websites, configuring email, and managing domains.