Understanding Broadband Technologies 

To all the "perfect" guys that comment here about the mistake on the board (1 bit = 8 bytes) let me break it down to you. If you've watched the video and listened to it carefully you'll hear that he actually says 1 byte = 8 bits, he just made a mistake while writing it, which it can happen to anybody. Also if you've read the description bar you would have noticed that the mistake was pointed out and it has been corrected. So out of 1 hour lecture he makes a single mistake, which he actually corrects it and you just complain about it instead of thanking this man for the knowledge that he shares with us FOR FREE!

School of Eli! This man has taught me more than my degree has, thanks for still being relevant in 2021 kudos to you bro.

Mr. Eli, I wanted to take the time to say thank you for being such an awesome guy and providing these educational videos for free. I myself am an IT Administrator by profession, I am not very great with networking but I am great with Windows administration and desktop support and know basic networking. I've been watching your networking videos lately and the terminology and depth you go into explaining different concepts and really making sure you drive the point home is great. Thank you so much for providing this FOR FREE! The world needs more people like you, you make my life so much better by doing this great service. I'm so glad I found your channel and website, it's worth so much and if I ever have extra money (hopefully the education I gain here will help with that) I promise I will donate to you to help you keep pumping out these awesome videos! Sincerely, Dan.

**Basics** (Internet == Cloud) 2:20 1 byte = 8 bits units of information. 4:40 sync vs async download = upload -> sync connection. d!=u is asynchronous. 5:40 LATENCY = TIME time for a packet to reach the other end. Good: L < 30ms. (satellite is >600ms) www.whatismyip.com/internet-speed-test/ 9:00 contract plan 10:40 static vs dynamic ip router has 2 ips. you need static for a server. *Ask for it to ISP.* 14:00 port-service. each service use different default port. ex. 80 (web). 16:00 Service Level Agreement. For business you can pay for a written contract. **Broadband technologies** To carry data from ISP to your modem. 26:00 T1 Was good. Old. Expensive. Can be used for phone or internet. 33:30 Carrier Ethernet Uses Ethernet Broadband Technology to connect ISP to you. 35:20 P2P Point to Point. Wireless but positional/directional. They put an antenna in your house. Sends wireless data to ISP antenna. Move antenna, lose internet/cloud connection. 39:40 LTE Wireless internet/cloud connection for mobile _devices_ 1.5 MB/s speed. Enjoy internet everywhere. Like a wap, with no cabling. Uses cellular antennas. 45:00 Digital Subscriber Line, DSL. Technology offered by Line-Telephone companies. Still up nowadays. Good: you don't share bandwidth with neighbors. No need of new infrastructure. 52:00 Cable Share bandwidth with ppl on the same cable line. No need of new infrastructure. 56:30 Fiber Optic Service (FiOS) Need expensive new infrastructure. 59:00 Satellite Very high latency (>500ms). Speed is fine. Elon Musk is building Starlink.

Eli the Great! thank you. You're true,genuine and real SMART guy because you share your knowledge. Real Smart person shares knowledge and explains in a very comprehensive way.

Best mentor on RU-vid by a long shot.

Eli is human after all.........LOL!! Thanks again ELI for sharing your knowledge, you are appreciated!

This is supreme and near eternal humanitarian service. His playlists are for *anybody* who understands spoken english. Thanks for your sacrifices Eli.

I just wanted to say thank you.....Eli....I always watch your videos to keep my fresh in the Industry.

You're awesome Eli. Thanks for the amazing education. long Live. Wishes from India

It's hilarious how much internet speeds have increased since Eli made this video. 50 Mbps and 100 Mbps were considered top-tier high speed lol

Although this video is 6 years old the information is still quite relevant. I'm using it to supplement and drill in what I learn in class.

Dear Eli Your videos are great. I really like your videos. I am a teacher but I have a knack for IT and related technologies. I usually like watching videos on IT and improve my knowledge. I have watched many of your videos and I know a lot. Tonight. I am studying proxy servers and broadband technologies. I downloaded the two videos. Great work. Keep sharing your knowledge. People benefit from your work. I truly appreciate your hard work and knowledge you have. Many people do not have good knowledge. You are an expert. Keep good work. Upload many videos, please. I learnt many things by watching your nice videos. Hats off to you, Eli.

I love, love, LOVE these tutorials! It's so nice to have a tech guy who explains things properly without being condescending. You sir, are a diamond.

I was in tears laughing after the intro! Well done Eli!

Eli, I must say you were a born teacher. With the knowledge and personality you broke it down exactly like it should. I work at a NOC and I need to brush up on things constantly to reinforce my skills. It always is great to hear a "personal spin" on a technical course. It is refreshing and fun.

Had no problem or issue with the basics; the courses I'm doing cover the techinical stuff, too. What makes your vids so informative is the honest consumer critique and the insights this offers to real world IT and the condition, human or otherwise of the environment out there. Failed normal?!? you gotta laugh! Cheers!

oh man, you need to do a time lapse montage kind of thing from the beginning to now. You have been and continue to be an inspiration and instructor to so many.

i have to say the detail you cover topics/subjects...... absolutely the best. with excitement too. awesome.

Thanks for these awesome videos! I wish they were more up to date, because I'm noticing that a lot has happened over the last 6 years (wireless ac for example), but these are amazing. Thanks a ton!

Thanks Eli. I am pursuing a degree in Information Technology and your videos are assisting me in achieving that goal. When I first started I went on the internet looking for additional knowledge, which i thought your videos provided!

8 bits = 1 Byte 4:03 That's his correction, everybody could make mistake, Eli is the Man!

One knows their trade when they can teach it so well. Great job!!

Very much appreciate the level of organization both on the video and in the video description.

Excellent video. Very informative. I've spent the last 7 years doing civil permitting for FIOS projects. 2017-2018 is the big push by these telecom giants. Billions. They are want to push fiber to individual homes. You'll get a mini node in your house, and the speeds will be insane to put it mildly. Exciting times ahead.

Excellent video. Cleared up in an hour what would have cost me $1500 a semester.

Thank you so much Mr. Eli....We really appreciate your time and consideration.Stay blessed man.

THANK YOU FOR THIS AWSOME CLASSES YOU'RE AN AMAZING GUY, ELI THE COMPUTER GUY, THANKS A LOT, THIS IS AMAZING I WISH YOU COULD MAKE MORE TUTORIALS ON EVERYTHING ABOUT COMPUTERS, I'M SURE THIS CHANNEL WILL GET MILLIONS OF SUBS.

No problem here. I think that he did a great job. the bit/byte mistake stuff doesn't mean a thing. I knew what he meant. I am grateful for the content. Great job!

8 bits = 1 byte Thant's the way I've been taught anyway. No big deal but remember that some people think of it this way instead.

I like your videos man. You are literally my teacher. Even though 1 byte = 8 bits.

Eli, you are definitely the man (or "guy" :P ). Thanks for the great tutorials and lessons on this stuff. Its always been an interest of mine and you make the material real accessible and easy to understand. Your contribution to learners is awesome. Cheers!

thanks to you, I finally found a way to study while I'm halfway asleep - huge amount of useful information and I like the format of you just ranting about your topics in one fluent talk. It's ideal to listen to while gaming or having a powernap. you should consider making soundcloud podcasts! there would be many guys waiting for you! keep up that good work! best wishes from Germany

Hey Eli, thanks for all the effort you've put into these videos, I really appreciate it.

"Correction: 8 Bits = 1 Byte -- In the overview Eli had a dyslexic moment and switched it." I just love this. :D I watch and laugh so hard, saying one thing, writing other :D I know that problem dude. U rock!

i dont know some one noticed but you wrote 1bit = 8Bytes, however this is other way around :) should be 8bits=1Byte

Bless you Eli. All your videos are still great today!

You are the best one i ever seen, keep on posting videos so that you help people and GOD may bless you!

I really enjoy your videos , old classes like this one or new content - used to be daily shows , now once in a while. Keep it coming.

These Video Tutorial Series. Your Teaching Style. Awesome And Cool. Thanks for all of the videos.

(15:25) About ISP's blocking certain Ports, can they block the port as a transmitter (SERVER) but not as a receiver (CLIENT)? Or are ports block bidirectionally (i.e. when a port is blocked it means that no data related to that port can be transmitted or received)? For instance, lets say I want to run a WEB-SEVER from my residence: Can the ISP block data-transmission TO Port 80, so that I cannot provide the service, and at the same time NOT block data-receive FROM Port 80, so that I am allowed to access youtube WEB-PAGE? Or once the ISP blocks Port 80, I can neither provide my WEB-SERVER nor access RU-vid?

He wrote the wrong definition on the board, but verbally said the correct definition. It happens to the best of us ;)

You have a very good teaching skills Eli! I wish my teachers were as talented and skilled as you are. Thank you for your hard work.

i just dont know how to thank u man !! f**k all my lecturers :P i swear i dont attend their classes, all i have to do is to go to ur channel and browse it, and am 100% sure that i will find it :) u helped me through my career, and my studying :) again and again,, thanks a lot.. best of luck buddy :)

8 bits/bytes... he was partially subconsciously correct... he didn't visually and auditorally integrate his subconscious when he physical wrote it. But still amazing in his delivery of challenging data.

u have the look of a construction or contractor with the intel of a well u, a good teacher

Eli my teacher i learn a lot from your videos thank so much

"Have gigabit internet in 10-20 years" 5 years later...

If Verizon (56:18) didn't force you to use their crappy equipment and just gave you an ethernet jack at their ONT that I could run a CAT 7 cable from to my router, I'd jump on it in a nanosecond! But for now, I'm load balancing TWC and Comcast into my router to get decent speeds and 99.99999...% reliability. P.S. I love your tutorial videos, Eli. I realize the older ones are a bit dated, as people in the comments below are complaining about, but you've uploaded a great many videos over the years and I can understand that keeping them all up-to-date would be nigh impossible. So cheers! :-)

Hey Eli, I just want to say, Thanks for teaching us dude.

@shawnofdenver you are correct...

Great videos a lot of help while I'm working towards my degree. Thanks a lot!

Bits, Bytes, Bears, Beets, Battlestar Galactica

Hi Eli, I was a little confused about the difference between bit and bytes as I learned about that some times ago in college, great you made correction. Anyway great vids, I love it. Keep it up!

Eli the smart and intelligent Guy ... thanks a lot :)

Great information, how ever, watching this several years later 15Mb connection, I chuckled. I average 115Mb connection.

You are so great. Thank you so much for taking your time and offering us these wonderful videos. Thank you so much! :D

what an explanation sir! i love your all videos lots

In telecommunications, asynchronous communication is transmission of data, generally without the use of an external clock signal, where data can be transmitted intermittently rather than in a steady stream. Any timing required to recover data from thecommunication symbols is encoded within the symbols.

Thanks for being awesome Eli! :)

hey..you're a gem..i always go through your videos whenever i get time.. for this video 19:53 the funniest moment..really.. thanks a lot for sharing all the talent you have..

Love the opening intro to this video;)

A lot of USEFUL Information ! Thank you !

You are the boss!! I do not have many friends in the industry so its pretty hard to come across advice and information. Thanks!

They are getting paid by sponsors, but his classes are great indeed. Keep up the good work Eli!

Where do these point to point companies get their internet connection that they provide?

Awesome class! Love this guy's passion. I've been takin notes on his lessons.

thank you so much Mr. ELY i like all your videos a genius man in term of info.tech. keep up the good lectures...

Isn't it 1 byte = 8 bit?

An excellent video covers the topic very well! Thanks.

Hi there Eli WOW, wonderful computer networking videos; thank you so much!!!

Very detailed lessons. Thank you.

excellent video. Can you do more video about limited data internet and how to choose the internet plan

39 : 47 ... Oh! Damn It Started Recording ;) .... Eli .. Your Videos Are Not Only Very Interesting And Educational But Its Fun Too...You Rock Man !!!!

can you further explain wireless and data limits? Don't all access types equally have data limits? What is the distinction with wireless not being able to have data limits, compared to other access types like DSL, etc.?

Thanks Eli, this is really helpful to me, I want to become an IT pro, please help me on what I can do more. Keep it up Eli, Thank you.

I think symmetrical and asymmetrical are the terms used for upload and download of data ... If upload speed equals download speed - the network is symmetrical... if they are at different speeds; they are asymmetrical. Synchronous and asynchronous has to do with clock speed and data rates --- Asynchronous Transport Mode for example means that data is loading at different rates... with varying time frequencies, while Synchronous Optical Network happens 8,000 times p/second synchronized.

I'm interested in launching a website, however I only have a commercial DSL connection via Cox communications. I'm guessing then that this isn't feasible since uptime is slow. Is that the reason why most tutorial online say you should just pay some other company to manage your website because of this high cost of course maintenance and backups too?

Thank you very much for broadcasting this astonishing video really enjoyed. Cheers

This was informative but the audio would be much better if you used a lapel mic to avoid the room echos.

25:26 "We have a T1 connection!" Ha! Ha! Ha! Ha! ^_^ Nice one dude.

Started taking classes. Keep it up. great stuff.

Yay, he showed the correction! I love Eli :0

Tubes? In my part of the US we refer to PIPES, both for plumping and for backbone connections.

Thank you supreme computer guy

Dude, your videos are great, but you really hooked me at about 58:02...LOL

I understand you perfectly professor !

why don't people don't stop to complain about the mistakes and concentrate in the knowledge?

Kudos Sirji, ur my network guru - very impressive.

thanks so much the interested guy,i hope you will post some ccna guide videos

you are doing a remarkable job ! thank you very much :) awsome Eli the computer guy :)

Yep! u was right 1 bit = 8 bytes ... its really .... really hardest thing to digest :P :)

good one. I wish it is up to date but still very informative

Is there anyway to use open dns on a network with dynamic ip address and is there a way to only make it active on one computer

What is the difference between the 192.168 ip and the 41.218 (online) ip?

I really like your classes, thank you for making them!

I see 1 bit = 8 bytes, that is a typo 1 Byte = 8 Bits, so, for example, the letter A (65) ASCII = 8 Bits if no stop/start bit as been used otherwise we are on 10 Bits is that not correct?

Wow!!! Its hard to take you seriously with your explanation of bits and bytes. Bass Akwards.

How does a broadband provider (ISP) clock "ports" ...what ports....? ports on your router? Ports on your modem? I ave control over certain ports...like say my router but not the ports they are blocking?

I HAVE CABLE INTERNET AT MY PLACE.I GOT NO MODEM.WHAT WUD U DEFINE IT BY?