DNS recursive query vs. Iterative query

The goal of DNS is to resolve a fully qualified domain name (FQDN) to an IP address. The process is called name resolution.

In this video I will use one example to demonstrate the whole process how name resolution is done. At the same time, the difference between recursive query and iterative query is explained.

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Sunny Classroom

[ukuduck]

Crystally clear! What an amazing teacher!

[brandonhunter]

I always forget the difference between “iterative” DNS query types and “recursive” DNS query types, but this video was a very helpful refresher.

[zidanetribal]

As usual, quality lecture from my favorite teacher here in youtube :). Thank you so much Mr. Sunny for always sharing with us your knowledge. The way you explain things is superb!

[joshuasoper]

Thank you! I don’t know why but this concept just wouldn’t click for me. You laid it out so clearly it seems so easy!!!! You rock my friend!

[jaisonthomas]

For years, I was trying to memorise the working of recursive and iterative querries. You really helped me :)

[tjstraw]

I could not understand the difference until I ran into this video. Very clear explanation. Thank you very much!!

[AnkitaShirodkarGoa]

Easy-to-understand explanation. Just what I was looking for. Thank you so much :)

[gaelguedia]

This is what I see when I talk about good tutorial format. Whatever your type of memory you can understand and easily memorize it. Good job thanks

[Thxiz]

Thank you very much Sunny! I was unsure how recursive query vs. Iterative query worked, but now I do!

[dili]

nice video, very clear to explain recursive query and iterative query on the DNS works

[Classicthinker]

my network instructor does not do any teaching in class, your videos are really helping me to study networking. thanks a lot!

[vladislavkaras]

Really great video, I must say!
I only have one thing to say, that host becomes before the DNS cache (if you already have something in cache, and you write same domain name in the host file, but with different ip, the computer listens to the host file first).

[AbdulAhmed-gxrh]

This is absolutely DNS Master class. Thanks mate.

[satyapramod]

Great Explanation on DNS. I clearly understand recursive and Iterative query.

[trendyniro]

Sir, thank you very much for explaining so clearly. I have been doing dns cloud infra setup for a client without even knowing the difference between recursive and iterative query....

[lesptichats]

You're amazing Sunny!! Thank you so much for explaining things so clearly

[carlospani]

Perfect explanation and easy to understand. Thanks a lot! 🙂

[ppvshenoy]

Thank you for the clarity presented between recursive and iterative. Much appreciated.

[tiruinternationalpublicspe]

Awesome Explanation Sunny, You just stole my Heart .

[ahmedfcb]

the best demonstration quality in a simple way thanks