Free CCNA | DNS | Day 38 | CCNA 200-301 Complete Course

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In Day 38 of this free CCNA 200-301 complete course, you will learn about DNS, Domain Name System.
In this FREE and COMPLETE CCNA 200-301 course you will find lecture videos covering all topics in Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience.
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======================
0:00 Introduction
1:14 Things we'll cover
2:02 Purpose of DNS
3:41 'ipconfig /all' (Windows)
4:40 'nslookup' (Windows)
6:31 Wireshark capture (nslookup)
9:36 DNS Cache
11:09 Host file
12:15 DNS in Cisco IOS
13:22 DNS configuration
14:59 DNS demo 1
16:05 DNS demo 2
17:53 DNS configuration (cont.)
20:24 Command review
20:40 Things we covered
21:57 Quiz 1
22:57 Quiz 2
23:50 Quiz 3
24:29 Quiz 4
25:03 Quiz 5
25:44 Boson ExSim
#cisco #CCNA

[@maxwellchessdotcom6952]

My kid is having a Jeremy's IT lab birthday party.

[@TheAnimeTrainer]

If this is true, that's hilarious.

[@jmooney999]

I was able to pass CCNA Exam - with the help of this course. Thanks so much.

[@JeremysITLab]

So glad to hear that, congrats! Glad my course was helpful :)

[@3000jeffery]

Hi Seamus, I was wondering if this was the only material you used to prepare. I plan on taking my exams and want to know if jeremy’s course covers everything for the exam. Thank you.

[@dariusvlogs3634]

How have you progressed since, have you managed to find any job opportunities?

[@alphapif]

congrats

[@dhruvkhurana7452]

This is the best CCNA tutorial I've ever seen!! Even I have learned 10 times more from you than I have learned from my college! You are awesome!

[@JeremysITLab]

Thank you :)

[@KingBarney]

Thank you so much for these course videos, I've been studying them religiously for the past 2 months. All the best!

[@SwrPwr]

feeling much better every time i view these great videos to reinforce my comprehension on topics I read in books and what a great support that this channel offer. thanks Jeremy !

[@vidyaprakhar5951]

Hi Sir, I just love the way you explain these topics so effortlessly. M a big fan of yours🙌. Thanks for the efforts.

[@safayethossain4485]

I have started my CCNA course 2 month ago & always following your channel. You are such a great teacher.

[@scottmcarthur7496]

did you pass?

[@kv5113]

i finally made it to DNS. excited to learn about this one. Thanks Jeremy!

[@homermadsen9121]

Great job as usual Jeremy! Thank you for the hard work you do to help us become successful!

[@JeremysITLab]

Thank you Homer! When are you planning to take your CCNA exam?

[@kamilovicftw6810]

I love the 5 questions system at the end of each video

[@kahlil5783]

I just passed CCNA today and it’s all thanks to you and Boson! I am forever grateful for your free course!

[@scottmcarthur7496]

did you use any other course or just jeremy's?

[@Alberto.81]

Thank you Jeremy great job as usual!

[@MiguelHernandez-zd7kr]

I enjoyed a lot this video. Thank you Jeremy!

[@iamjoycheee]

Thank you for making this DNS tutorial simple sir! I hope in the future you'd create some tutorials on Python, Bash Shell Commands for beginners. Your teaching skills saves me tons of energy and resources. Thank you once again.

[@yogam8255]

Thank so much for your help. I also used Boson Exim and I just passed my CCNA exam with 912. Boson was very helpful. Once again thank you. I do a great great job 🙏🏻🙏🏻🙏🏻

[@JeremysITLab]

Awesome, congrats! I agree about Boson, very good practice exams!

[@dbest19330]

Nice way to introduce the ip domain name command before the ssh/telnet videos and the explanation is beyond reproach.

[@JeremysITLab]

Thanks David!

[@nicholassattaur9964]

Great explanation as always! Thank you Jeremy for this..

[@JeremysITLab]

Thanks, Nicholas :)

[@anwarahmed5342]

Great, Awesome tip from bosom, thanks to our great tutor Jeremy, I appreciate.

[@JeremysITLab]

Thanks for watching 👍

[@johnayeko7424]

i think this is the lesson i have enjoyed most thanks jeremy we just love you....

[@cesarbrenner5146]

Excellent explanation about the subject. Jeremy have a way so easy to explain these knowledge about networking.

[@JeremysITLab]

Thanks Cesar :)

[@-b777ljq3]

well explained, quiz questions are very good

[@yeayea8334]

Slides to print 3:15 intro 4:30 ipconfig /all 6:20 how it works 8:20 Wireshark: A and AAAA 9:00 Wireshark: tcp and udp 10:00 DNS cache 10:45 clean cache 13:20 and 14:20 config router as dns server 17:00 when router dns server needs dns server 18:50 config router as dns client 20:40 resume commands

[@juwita5566]

Thanks Jeremy! I passed my CCNA exam today after 1 months of studying from your videos and netacad. You are like the best teacher for helping me understanding the all ccna materials 🙂

[@JeremysITLab]

Awesome, congrats JJ! Passing the CCNA in 1 month is quite rare!

[@juwita5566]

You make it easier for me. Thank you!

[@3000jeffery]

@@juwita5566 Hi J J, is there anyway we can connect, I want to take my ccna exam as well and I’m looking for a guide to complete my exams in a very short time! Thank you 🙂

[@juwita5566]

@@3000jeffery hey yeah sure. I took my exam from Canada, anyways if you can just send your email address here then I will reach you from there.

[@3000jeffery]

@@juwita5566 [e-mail] Thank you so much!

[@yuzurihainori5596]

I really appreciate your works, thank you!

[@JeremysITLab]

Thanks for your comment :)

[@fehliklikfeh9446]

a big thank you for the english subtitles because english is not my mother tongue and it helps me a lot

[@samirsamir7779]

hello Jeremy , I'm visionning , great as usually . thank you , best...

[@JeremysITLab]

Thank you :)

[@fatimahamdan3825]

thank you so much for such a great video !

[@abdiyyonis9746]

Thanks, yes i use and i even configure DNS on local server

[@user-ej3iw8lw3w]

just took my first ccna practice test. got an overall score of 51%. the only thing that tripped me up were those cursed 'refer to the exhibit questions', which seem to make up most of the exam. i have some serious work ahead of me, but I'm sure I'll make it

[@apollosolutions9961]

Excellent stuff!

[@merilr1656]

Thank you Jeremy!! You are amazing

[@JeremysITLab]

Thanks, Meril :)

[@englaytech1269]

I really thank you for the CCNA tutorial.

[@WeBBerTutoriais]

Thanks, I'm always following!!

[@JeremysITLab]

Thanks for watching 👍

[@Yasar4ever]

Beautifull explaination..

[@gee40trots]

thank you jeremy!

[@Deeepzee]

Thank you Jeremy your CCNA course is very extensive and covers every aspect needed to pass CCNA exam. I passed my CCNA last week and now i am preparing for my CCNP ENCOR. Please do share if you plan to make videos for CCNP ENCOR.

[@JeremysITLab]

I'll think about it after I finish this course!

[@mohammadosama8509]

@deep have you found any great resource like this for CCNP. I have nearly completed this course and after CCNA i am also planning to study for CCNP.

[@midknightmiddleman5887]

@@JeremysITLab spoiler alert: 2 years later…… *HE DOES IT!!!* 😃

[@konefine3626]

Thank you Jeremy

[@kg3474]

great job!

[@franksoko02]

As always thank you Jeremy,.you obviously dont know how good your lectures are and how much they mean to us but thank you again.lol

[@JeremysITLab]

Thanks Frank, I appreciate it!

[@hassanhhashemy8377]

thank you jeremy

[@StuartTufft]

I find it interesting when you say "before this was invented". I've grown up using a computer and it just, working but not all that long ago, it would seem, things were very different. Usually when things are 'invented' I tend to automatically think back to, let's say when the lightbulb was invented.. but I need to come back to reality and realise these protocols were made not all that long ago! I guess things really are changing at a rapid pace. Anyway... there is an insight into my mind. Thanks for the great video again Jeremy.

[@JeremysITLab]

Yeah computer networking itself is still quite new on the scale of things! I'm curious to see where things will be with another 50 years of development.

[@glenntembo2693]

Thanks J, you are the man

[@JeremysITLab]

Thanks Glenn, nice to hear from you!

[@DevOpsPulse]

thank you

[@MichaelFlenderson]

Thank you 🙏🏻

[@blendservers1948]

I was following David Bombal and Network chuck for CCNA. they are great teachers, always respect for them, but their CCNA course is not completely uploaded on youtube so i went to buy the course in udemy. but somehow I found this channel and I started following you. really your course is very helpful. it's not hard to find a free course but it's hard to find someone who can explain better. and you are the perfect teacher. thanks for this course which is helping thousands and thousands of peoples. I will attempt the CCNA exam in the next 2month im almost ready as i already have knowledge of these things (working with networks for the last 2years). please let us know how many videos left for this course, (if possible)? thanks again

[@VijayKumarwhatnot]

That's true

[@JeremysITLab]

Thank you, glad to hear you like the course :) The course is about 70% complete at the moment

[@franksoko02]

Have checked out some of the paid courses that arent as detailed and comprehensive as Jeremy's lectures.his really granular but avoids the unnecessary

[@tikshuv-ccna]

@@franksoko02 listen people I'm familiar with so many courses and payed also. This is one of the best, so clear, sharp 👍👍👍. You get also labs + anki... This course is premium @ no cost - unbelievable thank you Jeremy! 👏

[@gilmoshe854]

אחד התותחים בהסביר לי המון דברים שלא הבנתי

[@reshiowais-kq2rb]

Amazing😍

[@mohgha4047]

Thank you Jeremy I'm mohamed from algeria❤

[@wafakahalerras]

Thank you sir🙏

[@user-wc7cx9dh7z]

Thanks jermey

[@JeremysITLab]

Thanks for watching 👍

[@stardustmotion]

ill not forget to credit you in a interface description of my CCNA lab test

[@mharoonfrough719]

Once again great job, thank you for the video. I have a question though, can we use Bosom ExSim in tablets?

[@JeremysITLab]

ExSim only works on Windows, so probably not!

[@asu253941simi]

You are the best...

[@JeremysITLab]

Thank you ;)

[@christianforbis3313]

Just to add tcp is used rather than udp when different dns servers are communicating back and forth to get domain names from each other.

[@Reason_over_Dogma]

Hi Jeremy, may I ask how many videos are left for the course? Thank you🙂😊

[@marcuskabangu5010]

I really like what you're doing,you are the best one ever. What about wireless chapter?

[@JeremysITLab]

Wireless will come later! still making the videos

[@tikshuv-ccna]

Great vid, so good as always ! I feell that DNS is considered more UDP than TCP, i mean TCP is rarely used by DNS right?

[@JeremysITLab]

Yeah definitely! UDP will be used in most cases.

[@rahulnair3467]

Sir, I've recently started studying for ccna, and I'm loving your course and the way you convey everything, just wanted to say thank you very much :) Any update on how long would it take you to complete the full course?

[@JeremysITLab]

The course will be finished this year!

[@ashishprabhu3480]

@@JeremysITLab how Many more videos remaining?

[@dnoden]

Records used to map names to IPv4 & IPv6 addresses 7:30 .

[@pieleanumihai928]

thx

[@Mohamed-ch9vz]

Hi, Where can I find the WINDOWS commands presented in this video for MAC ? Thank you very much.

[@yoddy0]

I got bamboozled by that Boson practice question. I would've picked A not remembering standard DNS queries are UDP.

[@jeffrey1025]

Hey Jeremy, Ive been grinding through the course these last 3 weeks and i was wondering if there's any idea on how many more parts will be in the series? Also where would be some good jumping off points in other CCNA courses where I can continue from roughly the same point we are at?

[@JeremysITLab]

The course is about 70% done, so there are still many topics left. I recommend using Wendell Odom's official cert guide (vol 1 and 2) to fill in the gaps.

[@andybalding3573]

Topnotch 👌

[@JeremysITLab]

Thank you! :)

[@salimslim673]

hey jeremy i have a question if pc 2 is in the same sibnet as pc one why does it need a dns query to get its ip address? AND IS ALL SUBNETS WORK TTHIS WAY ?

[@CFranklin981]

Can you do courses over network+ and security+ in the future?

[@JeremysITLab]

I probably won't. ProfessorMesser already has great courses for them on KZbin!

[@usama7asan]

Thanks for the great explanation, Can I get the training material as a ppt files ?

[@JeremysITLab]

Sorry, I don't provide the slides

[@vidyaprakhar5951]

I am preparing for my certification, thanks for making it easier. So I had a question when a router is configured to act like a DNS, can it deal with the recursive query? Thanks in advance.

[@JeremysITLab]

Yes it can!

[@dedepantrocator]

Hi Jeremy, I have a question concerning the Boson question at the end; How do we know whether the request generated is not larger than 512 bytes or not ? if that is the case, won't the host establish a tcp connection with with DNS server?

[@nockoutkid03]

Yea, I was wondering the same thing.

[@Zeltchoron]

In order to generate a crypto key, SSH requires a domain name; I can no longer query the dns server (a router within my lab that I configured as the dns server) when I configure a domain name for that device. What am I doing wrong?

[@runtcpip-morganlucas]

I did the nslookup on youtube.com as well and got different information. I wonder if it's the instance of the same information on two separate hosts but they seem to be one to other nodes.

[@JeremysITLab]

Yeah, people in different parts of the world will get different results!

[@majljl417]

great

[@JeremysITLab]

Thanks :)

[@tomatordia8448]

best

[@unrealriot]

Hi Jeremy, would DDNS be covered in CCNA? Thanks

[@JeremysITLab]

I'm 99.9% sure you won't find any questions about it on the CCNA.

[@arionrares7764]

Hello! So Hosts files are now stored on DNS serveres instead of your onw device(PC)?

[@JeremysITLab]

Not really, DNS is more complicated than a hosts file.

[@datedatekyal3650]

Hello Jeremy, I have a question for CCNA 200-301 exam, password recovery is included in exam? If you don't mind, please answer me.

[@JeremysITLab]

It's not explicitly listed in the exam topics, so maybe not

[@tariqsubhan3775]

Sir, you deserve more but I can't do more than a comment, like, share and subscribe! I meant it...

[@majiddehbi9186]

hello Sir, just question where we can find anki and pkt of the last lessons until ssh ?

[@JeremysITLab]

Top line of the description: 'Free CCNA 200-301 flashcards/Packet Tracer labs for the course: jeremysitlab.com/youtube-join/ ' You will get an email with the link to Google Drive.

[@nayanaprajapati4686]

Hello Jeremy team, thank you for your time and effort on all of your free CCNA videos, I am using Neil Anderson Udemy course for CCNA and follow your all video until now. I am planning to give my exam in May or June, so I want your suggestion -if we were to try to get the CCNA exam done before June, what would you suggest another resource? Again thank you so much for very nicely explain all topics in detailed.

[@JeremysITLab]

Yeah my course probably won't be 100% done by then, so I recommend another resource, for example the official cert guides by Wendell Odom.

[@nayanaprajapati4686]

@@JeremysITLab Thank you sir 😊

[@axiseast8409]

good

[@JeremysITLab]

Thank you :)

[@faizaussi352]

Thank you Jeremy, may God bless you.

[@JeremysITLab]

Thank you :)

[@nikhilkunche9716]

sir can u please say why we have to enable the dns server in a device

[@JeremysITLab]

If you want the device to act as a DNS server, you will have to enable the DNS server in the device.

[@jhde9067]

So does the PC still go through the ARP process?

[@JeremysITLab]

Yes, the PC still has to use ARP to learn MAC addresses.

[@Yonathanfeleket]

why use DNS to ping instead of using traditional arp/ICMP echo request methods?

[@JeremysITLab]

ARP/ICMP are still used! DNS is just used before the ICMP message to resolve the DNS name to the IP address.

[@deadasfak]

11:28 I usually have arts and crafts stuff in my etsy folder

[@ivagar1982]

Hi Jeremy, Hope everything is smooth Have one question: Why would we want to configure a default domain name and make pcs part of it, as you did on 20:21 min? Why are dots included on the domain names? Thanks

[@JeremysITLab]

DNS uses a hierarchical system, so the domain name is combined with the host name to get the 'FQDN' (Fully Qualified Domain Name) of the device, for example R1.jeremysitlab.com. There could be tons of routers named 'R1' in the world, but only one R1. The dots are there for the same reason they are in a webpage, again it's for hierarchical organization.

[@ivagar1982]

Ok. So in the pc1.example.co.uk, pc1 is one host, example is another host, co and uk are different hosts? Could exampe.co be one host? If so, how would we know?

[@JeremysITLab]

@@ivagar1982 In that case 'uk' is a top-level domain, 'co' is a second-level domain, 'example' is a third-level domain, and finally 'pc1' is the host name. All of those together, pc1.example.co.uk, make the FQDN of the host.

[@ivagar1982]

@@JeremysITLab Ok I see... Domain names are used in various networking contexts

[@alittax]

Is Boson ExSim even better than the official practice tests that you get when you buy the electronic copy of the book from Cisco?

[@JeremysITLab]

I haven't tried those practice exams myself actually, but most people say Boson is better.

[@alittax]

@@JeremysITLab I see. Thanks for the info! :)

[@loveplayaboy888]

The ip dns server command is not working for me in packet tracer. Is this normal?

[@JeremysITLab]

There are a lot of commands not supported in packet tracer, that might be one of them.

[@majiddehbi9186]

Any thin about autonomous networking plz

[@JeremysITLab]

I will cover all CCNA exam topics 👍

[@majiddehbi9186]

@@JeremysITLab God bless u bro

[@LucianC137]

You didn't talk about the root server, TLD Server, authoritative name server, are they not needed for the CCNA? 🤔

[@JeremysITLab]

There are tons of things about DNS that I didn't mention, it's a very deep topic.

[@shavkatzokirov2785]

thank you Jeremy! I have one question, I just want to buy CCNA laboratory is this possible. if possible how much CCNA lab??

[@Heeby-Jeebies]

Are you asking to buy Jeremy's lab files? If so: They're free. Are you asking to buy equipment for a CCNA laboratory? Is so: It's pricey.

[@shavkatzokirov2785]

I want give lab files @@Heeby-Jeebies

[@shavkatzokirov2785]

how take lab files ??@wildeagle1376

[@sue7915]

Now I know where "no ip domain lookup" come from😄

[@amegabyte7986]

I was thinking the same thing lol

[@abdous6052]

do we use google DNS always?

[@JeremysITLab]

Nope, although it's a common choice!

[@leustad]

The ExSim question is a little vague, HostA CAN establish a TCP connection to the DNS Server if the message is greater than 512 bytes. So how can I decide that it's NOT one of the best answer. The CCNA exam started to get scary if the questions will be vague/unclear like this.

[@JeremysITLab]

It is a bit vague for sure. But for a regular DNS lookup (what's the IP address of this website?) you can bet that it'll be using UDP, not TCP. Most questions on the CCNA won't be vague like this, don't worry.

[@leustad]

@@JeremysITLab you are probably the only content creator who answers questions. Thank you sir !!!

[@datedatekyal3650]

What's your next step after DNS?

[@JeremysITLab]

DHCP

[@Melchizedek_]

'ipconfig /displaydns' in linux??

[@JeremysITLab]

Sorry, are you asking a question?

[@norwellsgn285]

🇵🇭🇵🇭🇵🇭

[@JeremysITLab]

Thanks for watching ;)

[@ziauddinnajmi3257]

i am not able to use unki software ,

[@JeremysITLab]

Hi, can you give some details? What device/operating system? What's the problem you're having?

[@ziauddinnajmi3257]

@@JeremysITLab i am using windows 10 ..i have install the unki software in my laptop but while importing the video it says that ..selected file was not in utf-8 format ..and i have download the videos in mp4 farmat ..

[@ziauddinnajmi3257]

I am still waiting ?

[@JeremysITLab]

@@ziauddinnajmi3257 Anki isn't a video player, you can't open video files in Anki.

[@ziauddinnajmi3257]

@@JeremysITLab i know that anki is not a video player ...but we have to upload the video ..while uploading it gives a mesge selected file is not in utf-8 farmat

[@hzakaria5338]

thank you