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Have you heard of IEEE 802.3? It has a long history and has to do with our topic today, Ethernet.

Ethernet is a communication standard that was developed in the early ’80s to network computers and other devices in a local environment such as a home or a building.

This local environment is defined as a LAN (Local Area Network) and it connects multiple devices so that they can create, store and share information with others in the location.

Ethernet is a wired system that started with using coaxial cable and has successfully progressed to now using twisted pair copper wiring and fiber optic wiring.

Let’s break for a trivia question. Who invented twisted pair wiring?
Alexander Graham Bell invented twisted pair wiring in 1881.

In 1983, Ethernet was standardized into the standard IEEE 802.3 by the Institute of Electrical and Electronic Engineers (IEEE).

This standard defined the physical layer and the MAC (media access control) portion of the data link layer of wired Ethernet.
These two layers are defined as the first two layers in the OSI (Open Systems Interconnection) model
The “physical” layer consists of the following components: Cabling and Devices.

First, let’s take a look at Ethernet Cabling;
As stated previously, Ethernet cables come as coaxial cable, which is not very common except in older installations, twisted pair, and fiber optic.

The most common cable is twisted pair cables, with the latest being Category 6 with speeds up to 1 Gbps and Cat6a and Cat 7 with speeds up to 10 Gbps.

Category 5 and 5e cables are both still used in many existing applications but handle the lower speeds between 10 Mbps to 100 Mbps but are more susceptible to noise.

The Ethernet twisted pair utilizes RJ-45 eight-pin connectors at either end of the cable that is pinned for transmitting and receiving data in either half or full-duplex mode.


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    • No Name
      No Name

      Hi, I have a question. At home I have a router that gives my devices (phone and IPad) internet. Since it’s really really slow (like 10mbit/s) I was wondering if I can increase its speed by using an Ethernet cable. It’s probably smart to also change my provider because the connection is nowhere close to what was offered but even with a new provider I would use the Ethernet cable, only if it works of course. I’d appreciate an answer if someone has one, maybe he said it in the video but I don’t have the time to watch it now, unfortunately.

      about 5 hours ago
    • tony guillen
      tony guillen

      I don't skip adds in these videos just to help this guy

      about 9 hours ago
    • RealPars
      RealPars In reply to tony guillen

      Thats really kind of you! Thank you!

      about 8 hours ago
    • yousef hesham
      yousef hesham

      thank you very much
      ccna i have learned and you learned me so much
      from EGYPT

      about 6 days ago
    • RealPars
      RealPars In reply to yousef hesham

      You are very welcome! Happy learning.

      about 6 days ago
    • Varsha Jangra
      Varsha Jangra

      dear sir your all vedio fully helpful for me but i request you to that please make vedio also hindi language..u can give me option to select hindi language

      about 9 days ago
    • RealPars
      RealPars In reply to Varsha Jangra

      Thanks for the suggestion! We currently only have English subtitles, but we will definitely keep that in mind.

      about 8 days ago
    • Dhinesh Dhinesh
      Dhinesh Dhinesh


      about 13 days ago
    • RealPars
      RealPars In reply to Dhinesh Dhinesh

      Thank you!

      about 13 days ago
    • I am MIEN
      I am MIEN

      What software that you use to created this cool video?

      about 20 days ago
    • RealPars
      RealPars In reply to I am MIEN

      Hey! We use Adobe Premiere for our videos. Thank you!

      about 17 days ago
    • Me Only
      Me Only

      What is internet? You ask. It's the gateway for the deep state to stalk people.

      about 21 day ago
    • Sushil Gharat
      Sushil Gharat

      Always a great video's from RealPars...
      Visualisations are awesome..
      Cleared all queries about topics..
      Thank you so much..

      about 27 days ago
    • RealPars
      RealPars In reply to Sushil Gharat

      Thanks for your support, Sushil!

      about 27 days ago
    • X_EpicChris_X

      Thank you for Sharing!
      Finally I can explain what the ethernet is.
      👍THUMBS UP👍

      about 29 days ago
    • RealPars
      RealPars In reply to X_EpicChris_X

      Happy learning!

      about 28 days ago

      Can we do ethernet communication betwen siemens s200 and scada system without internet ?

      about 1 month ago
    • RealPars
      RealPars In reply to TAGRAOUI LAHCEN

      Since the S7-200 CPU module does not have the needed hardware for Ethernet communication, you need an extra hardware module which is Industrial Ethernet Communication Processor (CP 243-1) for data traffic handling and communication based on TCP/IP. This module provides Ethernet access via an RJ45 port.
      As log and your distance do not limit you, you can take advantage of the Ethernet communication.
      This link may help you with your project: https://sie.ag/2Gt7O9R

      about 1 month ago
    • Hari Krishna Sahu
      Hari Krishna Sahu

      Great information..#HariKrishnaSahu

      about 1 month ago
    • RealPars
      RealPars In reply to Hari Krishna Sahu

      Thank you!

      about 1 month ago
    • ibrahimissa Issa
      ibrahimissa Issa


      about 1 month ago
    • RealPars
      RealPars In reply to ibrahimissa Issa

      You are very welcome!

      about 1 month ago
    • Stephan

      Very well explained, thank you for all the work you put into this video. 👍

      about 1 month ago
    • Michael Tayon
      Michael Tayon

      Ethernet is ALSO very popular for two more reasons. Better security than Wi-Fi, and inherently, no associated noise interference from other transmitters, devices, and appliances.

      about 1 month ago
    • BirdValiant

      A couple things:
      1. As others have said, cat 5e can be used for 1 Gbps speeds.
      2. CSMA/CD is no longer needed for full-duplex switched networks, each link is isolated and collisions are eliminated. Indeed, half-duplex links are no longer specified in 1 Gbps Ethernet, and aren't allowed at all in 10 Gbps. 802.11 Wifi does have collision issues due to its half-duplex nature, but it uses a related CSMA/Collision Avoidance method instead.

      about 1 month ago
    • Tianhao Wang
      Tianhao Wang

      good images, good animations, clear voice, informative explanation. I honestly do not know what else you can do to make this video better

      about 2 months ago
    • RealPars
      RealPars In reply to Tianhao Wang

      Thanks a lot for your compliment, Tianhao! We are happy to hear that. Happy learning!

      about 2 months ago
    • esther wang
      esther wang

      Could you please tell me the relationship between BSC and MSC?

      about 2 months ago
    • RealPars
      RealPars In reply to esther wang

      If by BSC you mean "Base Station Controllers" which is a telecommunication and wireless mobile networks subject, then I can refer you to this helpful document by Fujitsu; http://www.fujitsu.com/downloads/TEL/fnc/whitepapers/Fujitsu_Wireless_Backhaul.pdf

      about 2 months ago
    • Maysam Mirzakhalili
      Maysam Mirzakhalili

      good reviw . thank you.

      about 2 months ago
    • RealPars
      RealPars In reply to Maysam Mirzakhalili

      Thanks, Maysam!

      about 2 months ago
    • Afisal Habeeb
      Afisal Habeeb

      How much is the maximum length we can use for ethernet cable

      about 2 months ago
    • Bos Bientos
      Bos Bientos In reply to Afisal Habeeb

      100 meters

      about 2 months ago
    • shafie Dia
      shafie Dia


      about 2 months ago
    • Mihai Magurean
      Mihai Magurean

      Thx for the videos. Well done. Very useful. Keep going👍✔

      about 2 months ago
    • RealPars
      RealPars In reply to Mihai Magurean

      Great to hear! You are welcome :)

      about 2 months ago
    • Антон Пухарт
      Антон Пухарт

      Very useful video. Thank you for that

      about 2 months ago
    • RealPars
      RealPars In reply to Антон Пухарт

      You are welcome! Happy learning.

      about 2 months ago
    • Prathuin C.K
      Prathuin C.K


      about 2 months ago
    • Hiroki .I
      Hiroki .I

      I learned both Network and English
      Your talking pace and pronunciation are perfect for me(japanese)

      about 2 months ago
    • RealPars
      RealPars In reply to Hiroki .I

      Great to hear! Keep up the learning curve! :)

      about 2 months ago
    • TheOdosu

      Thanks to this video, I could easily understand this topic

      about 3 months ago
    • RealPars
      RealPars In reply to TheOdosu

      Great to hear that. Happy learning!

      about 3 months ago
    • eddahbi eddahbi
      eddahbi eddahbi

      thanks a lot

      about 3 months ago
    • RealPars
      RealPars In reply to eddahbi eddahbi

      You're welcome! Happy learning :)

      about 3 months ago
    • eddahbi eddahbi
      eddahbi eddahbi


      about 3 months ago
    • 문동선

      You know, computer scientists are used to handle the magical "Ether", the 5th element, as a physical substance through which electromagnetic energy must travel. The Ethernet, Ethereum, etc. It allows us to connect to a network.

      about 3 months ago
    • Abu Samah
      Abu Samah

      This is very useful for my polytechnic engineering research work. Thanks alot guys!

      about 3 months ago
    • RealPars
      RealPars In reply to Abu Samah

      Great to hear, Abu! Good luck with your research. You are very welcome.

      about 3 months ago
    • أنس اليوسفي
      أنس اليوسفي

      Thank you very much

      about 3 months ago