Everything You Need to Know About DNS – Fully Explained with Hands-On Demos In this video, we dive deep into DNS (Domain Name System) — one of the most fundamental (and misunderstood) concepts in DevOps, networking, cloud engineering, and web development. certbot certonly --manual --preferred-challenges=dns --key-type rsa --email info@ \ --server " " --agree-tos -d \ *. -d server { listen 80; server_name ; return 301 https://$server_name$request_uri; location / { proxy_pass http://localhost; include proxy_params; } } server { listen 443 ssl; server_name ; ssl_certificate /etc/letsencrypt/live/ ; ssl_certificate_key /etc/letsencrypt/live/ ; location / { root /var/www/html; index ; } } Whether you're a beginner, a DevOps student, or prepping for an interview, this video will give you a complete understanding + practical demonstration of how DNS works in the real world. 🧠 What You'll Learn: ✅ What is DNS & how it works ✅ Root Domains, TLD, SLD, and Subdomains ✅ gTLDs vs ccTLDs explained with real-world examples ✅ Name Servers and their role in DNS resolution ✅ Hands-on: A, AAAA, CNAME, TXT, MX DNS records ✅ Tools: dig, nslookup, Cloudflare/Route 53 dashboards ✅ Real-world troubleshooting and DevOps use cases 🛠️ Demo Includes: Setting up CNAME records on a real domain Pointing subdomains to services (GitHub Pages, Cloudflare Pages, etc.) Verifying DNS propagation Using dig and ping to validate configurations 🔔 Subscribe for more DevOps, Linux, and Cloud tutorials 👍 Like if this helped you understand DNS better 💬 Drop your DNS questions or horror stories in the comments! #DNS #DevOps #CloudComputing #Networking #CNAME #NameServer #Linux #WebHosting #TXTrecord #MXrecord #Route53 #CloudflareDNS #YouTubeSeries #devopsengineering network security dns types dns troubleshooting DNS, DNS explained, DNS tutorial, DNS records, A record, CNAME record, MX record, TXT record, NS record, DNS full guide, DNS basics, How DNS works, DNS examples, DevOps DNS, Cloud DNS, DNS for DevOps engineers, DNS for cloud engineers, DNS lookup, dig command, nslookup tutorial, DNS configuration, DNS troubleshooting, A record vs CNAME, DNS step by step, Domain Name System, DNS interview preparation