How DNS works - DNS LOOKUP | DNS forward Look up explained STEP BY STEP with EXAMPLES | domain name

How DNS works - DNS LOOKUP | DNS forward Look up explained STEP BY STEP with EXAMPLES | domain name
What does DNS Lookup mean?
A DNS lookup, in a general sense, is the process by which a DNS record is returned from a DNS server. This is like looking up a phone number in a phone book - that is why it is referred to as a "lookup". Interconnected computers, servers and smart phones need to know how to translate the email addresses and domain names people use into meaningful numerical addresses. A DNS lookup performs this function
The basic idea of DNS is that humans can't easily remember long strings of digits like machines can, but can much more easily remember words. So, when you type in a domain name like www.techopedia.com, the request is forwarded to a DNS server (whether locally or at an ISP), which returns the corresponding IP address. This address is then used by all the computers and routers to channel the request and responses of a user's session. The result is the user sees web pages as expected or has email show up in an in-box. The two types of DNS lookups are forward DNS lookups and reverse DNS lookups.
other terms related to DNS look are Forward DNS,Reverse DNS (rDNS),Domain Name System (DNS),DNS Server,Domain Name,DNS Record,Domain Name System Parking (DNS Parking)which are taken up in separate video tutorials.

Пікірлер: 68

  • @brandonkirschner8624
    @brandonkirschner86246 жыл бұрын

    One of the best DNS videos I've ever seen. Great work!

  • @chloekimball536
    @chloekimball5365 жыл бұрын

    the best video on DNS on youtube! short, simple and complete

  • @isaact4315
    @isaact43156 жыл бұрын

    Thanks so much for the visuals. A lot of other videos have flashy videos but your drew the graph and that's what I needed to see.

  • @ayeshapanchavi8093
    @ayeshapanchavi80936 жыл бұрын

    This is great.Simply explained the process.Thank you very much.

  • @blackblather
    @blackblather5 жыл бұрын

    thx, saved me a bunch of time. I was just curious why my host game me the option to set my own nameservers, and the more i dug into it, the more confused i got. Now it makes a lot more sence. Thanks again

  • @aravindvishnus
    @aravindvishnus7 жыл бұрын

    simple and clear . Great video

  • @amolagarwal5336
    @amolagarwal53366 жыл бұрын

    clear and concise explanation. the best video on dns i found.

  • @melliedalton4165
    @melliedalton41654 жыл бұрын

    This is great! I'm taking a course and didn't understand and now I do. Thanks

  • @awi363786
    @awi3637865 жыл бұрын

    couldn't understand the concept after watching hours of videos he crystal cleared it in 6 minutes great video.

  • @dpasadis
    @dpasadis4 жыл бұрын

    Very well done. Great layered approach. Excellent!

  • @akan487
    @akan4872 жыл бұрын

    Amazing explanation, I now clearly understand what dns and dns lookup is. Thank you for uploading this

  • @ppvshenoy
    @ppvshenoy4 жыл бұрын

    Thanks for the fantastic explanation. Much appreciated.

  • @AlexandraCPacker
    @AlexandraCPacker5 жыл бұрын

    Excellent explanation - thank you. Very clear. I love a good diagram. :-)

  • @hulkdc5499
    @hulkdc54996 жыл бұрын

    this is really helpful, please cover all the networking concepts in detail in video series. thanks

  • @petrknetl5952
    @petrknetl59526 жыл бұрын

    Thanks for easy and intuitive explanation :)

  • @aljodomo
    @aljodomo5 жыл бұрын

    Your video is referenced in my computer science class :D

  • @davidd8355
    @davidd83553 жыл бұрын

    Agreed one of the best explanations here!

  • @garrickmayville1842
    @garrickmayville1842 Жыл бұрын

    Thank you for this video. Really broke it down well!

  • @priyankapati1144
    @priyankapati11449 ай бұрын

    Loved the explanation :)

  • @NasirAli-hs8np
    @NasirAli-hs8np4 жыл бұрын

    Thank you ! very informative video.

  • @katsunoi
    @katsunoi6 жыл бұрын

    great video, thanks for sharing!

  • @sushilkashyap
    @sushilkashyap5 жыл бұрын

    beautifully explained...lovely

  • @victord.4388
    @victord.43884 жыл бұрын

    Excellent! Very useful! Thx

  • @crazyjipi
    @crazyjipi5 жыл бұрын

    You explain easy way thank you for share

  • @mbigras
    @mbigras6 жыл бұрын

    You rock man 👍👍

  • @siddharthaggarwal3495
    @siddharthaggarwal34956 жыл бұрын

    Really helped. Thanks

  • @almazabraha
    @almazabraha6 жыл бұрын

    Great video thank you

  • @dineshharmalkar4549
    @dineshharmalkar45496 жыл бұрын

    Simple. Thanku

  • @brianmisasa
    @brianmisasa4 ай бұрын

    This was a well done video

  • @UdayenduSekharkar
    @UdayenduSekharkar5 жыл бұрын

    Nice explanation !!

  • @MrBat000
    @MrBat0006 жыл бұрын

    Nice video! Thanks

  • @anatolec1480
    @anatolec14806 жыл бұрын

    nice thank you very much ! :D

  • @deepakpaul1254
    @deepakpaul12546 жыл бұрын

    great vedio

  • @yoyoh0neysingh
    @yoyoh0neysingh6 жыл бұрын

    Good Job! Nice Video

  • @itftcomputers
    @itftcomputers6 жыл бұрын

    Thanks for the video. Just wanted to double check. I thought that it's Authoritative query once it's passed the ISP DNS server?

  • @ogunsadebenjaminadeiyin2729
    @ogunsadebenjaminadeiyin27294 жыл бұрын

    Great explanation

  • @thetmalabak7140
    @thetmalabak71404 жыл бұрын

    Good video. Thank!

  • @erikvasquez7827
    @erikvasquez7827 Жыл бұрын

    Great job!!!!!!!!

  • @aainaaidris9158
    @aainaaidris91586 жыл бұрын

    Thanks

  • @syedarbaz3781
    @syedarbaz37815 жыл бұрын

    Amazing

  • @sonujalwal4768
    @sonujalwal47684 жыл бұрын

    Great video. Thnaks. Why do we need to create reverse lookup zone ?

  • @vimalarani8143
    @vimalarani81435 жыл бұрын

    It's awesome.... Good work. Please post how tcp, udp, icmp protocols are working.... When ping coomands are used to connect to another computer which protocol makes this process easier. Pz share

  • @connorflewitt8377
    @connorflewitt83772 жыл бұрын

    Great video thank you, for other searchers audio track is entitled Nice and Easy by Hoang Gia Vinh

  • @aisanh8258
    @aisanh82582 жыл бұрын

    thanks

  • @anaperel8590
    @anaperel85902 жыл бұрын

    Great explanation! I have a question though. Say yahoo has a primary DNS server and a secondary DNS server. Which server’s IP address does com send?

  • @404unk
    @404unk3 жыл бұрын

    Perfect video but I can't still understand how resource records works and which servers have them. Also, a little clarification: isn't it an iterative query? Still thx a lot man, ^^

  • @green10701
    @green107013 жыл бұрын

    Will there be another videos of the series "How DNS works"? Reverse DNS?

  • @FrankBugZappa
    @FrankBugZappa2 жыл бұрын

    do the other dns servers cache the new name as well?

  • @SajidAhmed94
    @SajidAhmed943 жыл бұрын

    How does the ISP know the address of the root level nameserver?

  • @chandnimahajan2791
    @chandnimahajan27916 жыл бұрын

    Thanks for sharing this video. I have quick question . how long chache remain on DNS server?

  • @lydiarice3713

    @lydiarice3713

    6 жыл бұрын

    chandni Mahajan , it can be up to 48 hours on an isp name server or only 15 minutes on a host server. This helped me: support.managed.com/kb/a604/dns-propagation-and-why-it-takes-so-long-explained.aspx

  • @lydiarice3713

    @lydiarice3713

    6 жыл бұрын

    Where do the registrars fit into this process?

  • @jennymandl6910
    @jennymandl69105 жыл бұрын

    video is great the but the music is really distracting

  • @arjunbhattacharya3623
    @arjunbhattacharya36236 жыл бұрын

    nice video .. but annoying music

  • @JP-Gurley
    @JP-Gurley Жыл бұрын

    guess i need to setup a reverse lookup🤷🏻‍♂️😮‍💨

  • @chandrasekharnadar9623
    @chandrasekharnadar96234 жыл бұрын

    .com server already knows NS for yahoo.com , then y again query to yahoo.com ?

  • @khanolkarsagar

    @khanolkarsagar

    4 жыл бұрын

    It's not authorative for same, hence request is forwarded

  • @RajivKumar-ee7xv
    @RajivKumar-ee7xv4 жыл бұрын

    I don't understand why we need dot root server? in this case why ISP recursive request directly go to .com DNS sever. What is benefit of dot root server when it doesn't know anything

  • @khanolkarsagar

    @khanolkarsagar

    4 жыл бұрын

    Imagine dot as index page...with contents and subcontent..

  • @RajivKumar-ee7xv

    @RajivKumar-ee7xv

    4 жыл бұрын

    @@khanolkarsagar but we already know we need to go com subcategory, then why going to dot require?

  • @ashamaniq

    @ashamaniq

    3 жыл бұрын

    So look at .com .net .gov .info .biz .mil you name it, the list keeps growing, keeping it all under one big group is not very efficient; this topology of having different layers surprisingly optimizes the way caching and searching works by splitting the massive amount of ever growing list of domains. Imagine each one as a forest, in which you have trees, in which you search for individual leaves. .com is its own forest Now to answer your question... You you can have rajiv.com and rajiv.info and rajiv.net So if you have everything into the same “forest” you add one more layer of complexity because now you need to determine are you searching for .gov? com? Instead of eliminating that problem by simply filtering by .com Comparing costs time.

  • @kobalov1
    @kobalov17 жыл бұрын

    what no broken indian english? holy... this is something else

  • @CasaRol

    @CasaRol

    5 жыл бұрын

    You, I like you :D

  • @veerverma5586

    @veerverma5586

    5 ай бұрын

    ​@@CasaRolThen ask he/she maybe he also likes you? Maybe worth to try