What is DNS? | DNS Working, Packet Flow & Records | Hindi + English

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IT Index is providing core networking contents .
In this video, we explain DNS (Domain Name System) in a very simple and practical way.
This is a complete DNS tutorial in Hindi + English for beginners, students, and interview preparation.

🔹 Topics Covered:
✔ What is DNS?
✔ Why DNS is required
✔ Domain, Name & System explained
✔ How DNS works step by step
✔ DNS packet flow
✔ Root Server, TLD & Authoritative DNS
✔ Recursive & Iterative queries
✔ Common DNS records (A, AAAA, CNAME, MX, NS)
✔ nslookup & troubleshooting basics
✔ Real-world examples

This video is useful for:
✅ CCNA / CCNP students
✅ Linux & System Administrators
✅ Network Engineers
✅ Interview preparation
✅ Beginners in Networking

📌 Language: Hindi + English (Hinglish)
📌 Video Length: 35 Minutes (Full Concept)

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