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In this lesson on IP addressing you will learn all about Network IDs, Subnet Masks, and CIDR notation. This lesson is the second of a series of three total lessons on IP addressing which break down the IPv4 address, network IDs, subnet masks, and the IPv4 class system.

Lesson 1:
Lesson 2:
Lesson 3:

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43 پاسخ به “IPv4 Addressing Lesson 2: Network IDs and Subnet Masks”

  1. Thank you very much! I now understand! awesome work!

  5. This is the best subnet mask explanation. Thank you very much.

  6. I remember when I first watched this video it was like…MIND BLOWING 😀 When u meet these numbers all the time but u don't know the logic behind them…and one day comes the revelation and u are like some blind man who just got to see for the first time. XDXD

  7. I just wanted to thank you so much! As someone who's naturally bad with math you've taken something that was my worst fear and turned it into something understandable for me 😀

  8. Just wanted to say thank you for such a well organized and clear explanation. 👍

  9. Being struggling with this and you broke it down easily … finally wrapped my head around it. Thanks guys.

  10. This channel is gonna hit 500K subscribers soon!
    And I am here from 30K subs. hehe
    Awesome explaining and awesome channel.. good job!

  11. thanks alot, greatly explained

  12. what an amazing and easy explanation. Took forever to understand this.

  13. Thank you for this video. very good way to understand.

  14. Oh my god…

    Thanks a lot for this explanation. Trying so hard to understand it but found it first time and very easy to understand.

    God bless you brother…I am so happy to understand the concept.

  15. Thank you so much! I watched dozens of videos before I found yours. It's the first one to make everything clear !!!! Thank you !!!!!!!!!!!!!!!!!!!!!!

  16. Perfect explanation! Subnet calculating is very easy now!

  21. it is fantastic course so please give emeil adress

  23. good one dude,… helped me alot in understanding.. keep up good work

  24. Well explained. Well taken. Thanks for sharing your knowledge.

  25. Liked&Subscribed. Thank you dude. Amazing tutorial!

  26. I still don't understand where the IP addresses themselves come from lol that/s my biggest issue now. I totally understand everything in this video though, if I'm given the IP address first I can figure that stuff out. I also have a good idea of IP addresses, but I don't understand why sometimes the third octet is the number it is

  27. It's a good video, except stuff at 14:00. This is NOT adding bits because 1+0 = 1 obviously, it's a logical AND operation.

  28. What if the subnet octet in question is say 212 which in binary is 11010100 instead of the examples that had either 11111000 or 11000000? Would the line be drawn as 11|010100 or 110101|00? Do the 0's between the 1's cause an issue or do you go to the final 1 of the subnet octet binary conversion? If you mentioned this I apologize. Honest mistake.

  29. Started my introduction into subnetting and my head almost immediately exploded. Then I found this gem. They way you explain this makes it so a 6th grader could figure this out. Thanks a ton.

  30. Thanks great explanation !!! make so much sense now, how ever I am still questioning where did you get that 4th octet mask bits???? 🧐😕where does it come from???

  31. such amazing video. thumbs up and kindly do more of them.

  32. o just wish you had a class on udemy… i will buy all your training.. u make things look easy.

  33. This is great for getting net IDs. I'd like to use this if i can. But does this method expand to help determine block sizes? Because I feel I NEED that for ccna…..

  34. Thank you..It's So Helpful but Hard😢😭😖

  35. really good video ..very easy and helped me alot <3

  38. This is one of the best, clear and concise explanation. Good job….Thank you!

  40. You are so great when explaining this subnetting. Thank you so much

  41. Very good detailed video. I have always struggled with understanding subnet masking and this really helped. Thanks for posting this.

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