What is DNS and how does it work?

This video explains DNS, the Domain Name System and how it works. It covers the hierarchical structure of DNS on the Internet. The process of making requests and receiving replies. The application layer protocol, the different types of record requests, the structure of the DNS header, and resource records, as well as the different types of name servers.

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[tonyromano]

I have just discovered your channel, I am very pleased that I have. I'm pursuing my CCNA and this material and its simple, easy to understand presentation is a valuable asset for me. Thanks.

[slamtoo]

I really learn a lot from your channel.
I got my CCNA through ur help and now im ready to renew it again same way through ur channel again.
A Big Thank you from Morocco.

[cervenka]

Hey Dan, i have to say... Your videos are so good that they are better than some of the courses videos that i paid for, thanks for your content ur helping me alot!

[karanvyas]

Thank you so much for serving community with your knowledge!

[vicky]

Dan, Many thanks for your your video. your way of teaching is great. it makes everything easy and understandable. you break it to very easy basic level so anyone can understand and get strong fundamentals.

[qhqqxeh]

You are a great teacher
I love your easy way
Thanks from egypt

[MrTippanna]

Nice explanation and easy to understand.. thanks you very much.

[almostbad]

Thanks for your vid sir..
As usual, easy to understand..

[husseinnajafli]

It was a very good explanation. Thanks. Please share the text file in the video.

[vipinnair]

Hi Dan, Nice video and explanation also. I hope the notes that you are shown in the video is from RFC . if it is RFC then please tell me the series that you have used here.Currently I am using RFC 1035 . But there is not intro about DNS.

[s]

Wow awesome video, thanks for explaining these concepts so clearly!
Could you make a video on CA Certificates? I've never been very clear between CA Certificates, client certificates and other types of certificates.

[homemark]

is backup dns does far more reliable than their main?

[AnkitKumar-uhrm]

Dan why didn’t you explain iterative request?
You have explained so hierarchical

[satorlcd]

please can you set subtitle in spanish, please. thanks a lot

[sanctuary_of_soul]

Your explanation good. Thanks. But i put a dislike for the ads on every minute

[tahamostafa]

Hello . I love you . I want to tell me how to get free internet with free host in my country all hosts give 200 ok but they are all filtered how can i pass this filter . I am waiting for replay . Thank you from Egypt