OSI Model Layer 1 - Physical

Introduction to the OSI model for networking, starting with layer 1, the physical layer.

OSI Model

Physical Layer

[noonpe]

That was so practical... I have seen tons of videos about Layer 1 but this video is something else and what I personally can feel...

[AlexLin-fvsv]

I am from Taiwan, this explanation is so crystal clear that I can understand it easily

[CamStansell]

$50+ Billion nbn dollars later and my 1st world internet still has a phone line rj11 'layer 1' !!!
Loving this series.

[DimitriPappas]

Practical, fun, and educational series so far. First episodes were a bit basic but it's starting to get interesting now. Look forward to the coming episodes!

[glonch]

I can't wait for IBM Type I Token Ring review... ;-). Great series.

[agroleau]

Would love to hear more about the layer one part of WiFi and how radio waves work, how it’s affected by the environment, and so on. Keep it up mate! Really good content!

[yangxuanxuan]

Great explanation. Many just trying hard to talk physical layer on paper but no one let you know how does it look like in real world.

[abdulsalaam]

really looking forward for upper layers. interesting series

[vuduvudu]

Better than the TCP component of the MCSE course.

[dkaheat]

I am about to get out of the military to go to school for network engineering any tips on what I can do for experience. I am completely changing fields from medical to IT so very little experience.

[ApurvKumar-um]

hey can you make a tutorial for tcp/ip model as well?

[drugndrop]

Hi @cwne88!
I think your old videos to be much more advanced and interesting. Are you using these new ones for some introductory networks course?
Do you plan to restart doing cool/advanced stuff in parallel to this?
TYIA

[muctop]

I worked a lot with RS232 (the -12V / +12V stuff).
Start-Bit, Data, Stop-Bit; shift-register; baud-rate;
I know what´s going on there in detail; How data gets into the storage or cpu
but I never got the shift to Ethernet!

Searched a lot but found no detailed explanation on internet, how Ethernet is really going, from wire to data.
They are babbling of layers, and OSI and packet size and header; this is clear, but the first step from wire up is allways missing.
How is that "0" or that "1" represented and how does it form to the packet (with header an ip and crc) and so on )?
Of cause it´s all hidden in the chips today, but
I just want to understand the basics. Can you help?

[victorgrovers]

hi i am doing my a+ and n+ can you help me prepair for the test of n+

[SteveAbrahall]

Happy green lights! DO you have happy green lights! Its layer one!

[dtec]

old coax ring topology now mostly defunct but an interesting time in PC networking land