DNS Explained in Linux | /etc/hosts, /etc/resolv.conf & /etc/nsswitch.conf | KodeKloud Lab
In this video, I explain one of the most important networking concepts: DNS (Domain Name System).
Topics covered:
✔ What is DNS?
✔ How DNS works
✔ DNS Resolution Process
✔ Browser Cache
✔ Operating System Cache
✔ /etc/hosts
✔ /etc/nsswitch.conf
✔ /etc/resolv.conf
✔ Root DNS Server
✔ TLD Server
✔ Authoritative DNS Server
✔ Linux DNS Commands
✔ DNS Interview Questions
This video is based on the KodeKloud Linux/Networking Lab and is perfect for beginners preparing for Linux, Cloud, DevOps, Technical Support, or System Administrator interviews.
Useful Linux Commands:
hostname
cat /etc/hosts
cat /etc/resolv.conf
cat /etc/nsswitch.conf
nslookup google.com
dig google.com
host google.com
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