Introduction to DNS (Domain Name Services)

Info
Level: Beginner
Presenter: Eli the Computer Guy
Date Created: March 13, 2013
Length of Class: 19:17
Tracks
Servers
Networking
Prerequisites
Introduction to Networking
Purpose of Class
This class teaches students the basic concepts for network DNS (Domain Name Services).

Class Notes
DNS is the Server Service that Maps Hostnames/ Domain Names to IP Addresses
DNS and DHCP are different services that are generally hosted on the same server, but can be hosted on separate servers
Dynamic DNS allows DHCP to automatically add Name and IP Address mapping to DNS tables.
Most techs will work with DNS built into Small Business/ Home Routers or ISP Modems. Other variations of DNS are provided by Windows Servers or BIND which is used on Unix and Linux servers.
A DNS implementation may be very simple or very complex. BIND and Windows DNS can have many configurations and options while DNS built into a Linksys Router will only have an On/ Off toggle.
DNS Servers can be configured to query other DNS Servers if they cannot find a result in their tables.
Reverse DNS maps IP Addresses to Hostnames/ Doman Names. This is done for security to verify a connection has not been redirected by hackers.
Resources

[denysehuezo]

truly amazing, way better than expensive textbooks, college classes, and mediocre professors

[bobbyjay]

I learned more from your half hour videos than I did in a whole year of school

[llyzz]

I really like how you explain these stuff. You are a very good teacher! :)

[ink]

Eli I love how you speak so clear and confident, thank you so much!

[HandOfGilgamesh]

You're like the IT Walter White!!! you explain things so passionately and convincingly. so thank you so much

[immortalinside]

Great set of videos. I have been a web programmer for a long time now, and getting into IT. I love being able to learn at my own pace, and the internet is such an amazing place to learn things. Thank you for these videos, Eli. You are a fantastic instructor! I dart around a bunch, I think your videos would do well numbered, so I can sort of see soem direction in them. But either way, thank you so much!

[davey]

Eli, you are the man! Thank you so much for these videos. I'm an IT student and your classes really help clarify some of the questions I have left over after my in class time and other resources. Thanks again and keep it up brother!!!

[jackiegarcia]

Hands down, the best IT instructor!

Thank you for what you do Eli! I recommend your videos to anyone who is looking for an outstanding IT channel on YT.

[target]

You are the best when it comes to teach online. To the point and very clear understanding methods. I really like your way of teaching.

[shubhbutani]

Your awesome.. Its so much easier to understand this way. Most people just go ranting of information and it just gets to hard to understand. This is best YouTube video I have seen till now on domains

[mayankkumar]

Respect..!! I really don't like to study any of subject but since when i have watched your videos.. I start studying alot. you made it easier for me.. really ton of thanks !! you are the best teacher of this world wish i could meet you once in my

[degan]

i would of loved this about 2 years ago, one thing that always got me was the different between local and public domains and how it tied in with AD

[p]

Just love how you make these difficult ideas so so clear, have learned so much only from two of your lessons, and i'll continue doing so. Fantastic work pal!

[LilliSundin]

I'm in a computer networking class right now and we don't have any lessons only books and the internet. I don't know how big the changes it is to 2016 but still it helps a lot when I write my homework. You got a new subscriber :D (sorry for the bad english)

[jkilleen]

As usual, a very informative and well presented lesson. I am so grateful for all of generosity of the work and effort . Thank you Eli!!!

[tamarindz]

eli you should be awarded for this great work you are doing.

[phillipfauci]

You are the best teacher that I have had in a long time. it is very refreshing and a joy to listen your videos.

[kashmenon]

This has been one of the most informative videos on youtube, that i have watched. Thank you for spending your time to explain this. I really needed this.

[gashawlikie]

I have no words for your presentation. You are kind and skillful. God Bless.

[codeChris]

This was so helpful! I have followed you cause of your new videos for a long time, not these older educational ones. But you could definitely do more of them. You explain it very clearly. Thanks!