Man this networks class makes me want to move into a van down by the river. I can't wait for this semester to end. Thank you for the content to help me get through.
Nice. Indian letures are the best. I'm not used to with Indian English but there is sub available so I was still able to understand. Thanks for knowledgements!
I sat for half an hour listening to my professor 😹😹 i didn't understand accept the heading..but when u detailed the concept by showing the animation within a fraction of second I was able to understand thanks a lot
one of the best explainations one can get get on youtube....please let me know if you guyz have a proper course,...i would love to do it...ineed certification and project...
It may be important to add, that if ACK 2 is lost but the sender still recieves ACK 3, he knows that the receiver actually recieved PCKT 2 even if he didnt receive the acknowledgement for it. So he will not resend PCKT 2.
that's would be right if it's explicitly mentioned that we are using " Including acknowledgement " : which means we acknowledge all previous frames the sender has received and not every frame individually. For example, if ACK n is received by the sender, it means that all frames ( from 0 to n-1 ) are marked as received. Even though it's not the case by one of the frame ( frame get lost ).
I guess, As soon as the time's out(in waiting for acknowledgement of Frame2), the next frames i.e., Frame3,4,5 which were already sent are discarded ..So, the receiver will not receive any frames and thereby it can't acknowledge.
Thanks for the video. You should also include timers like start timer, restart and stop timers according to packets sent/Recived or lost, the timer concept i also important to understand.
Great short lesson, you were very clear and easy to understand. However, I'd like to point out that in the example you provided there's an error: GbN uses cumulative ACKs, meaning if ACK (packet 2) is never received, but ACK3 is received, we assume that ACK2 was lost but the packet itself was received.
🎯 Key Takeaways for quick navigation: 00:00 📚 Introduction to Go-Back-N ARQ 01:20 🔄 Go-Back-N ARQ Basics 03:38 🧮 Sequence Number Calculation 05:42 🎬 Working of Go-Back-N ARQ Made with HARPA AI
We can find all the topics online but you will find the well organized playlist very rare.. Till Now I have completed from 1st video to this 61st video.. I hope I can complete this as soon as possible..
Omg,,, I clearly understood this. I was looking for some tutorials before my exam and I m lucky enough to find this channel. Thank you so much. Explanation is crystal clear. 🤗❤️
as you said that the frame 4 and 5 are discarded by the receiver because the frame 2 was lost, after this frame 2, the frame 3 was also sent, what about that ? is that also be discarded by the receiver ?
Towards the end, you mention that the receiver did not get frame 2. That is not consistent with the timing diagram. Frame 2 is actually received, it is the ACK for frame 2 that is lost, so when the sender times out, it sends 2,3,4,5 and because the receiver in Go Back N can only receive in-order frames, that is why the initial transmissions for frames 4 and 5 are discarded.
11 minutes of your video explaining is better than my professor full 4 hours lecture session. Bad lecturers will tell you to self learn despite the expensive tuition fees we paid them. Well, by using self learning as an excuse, this caused more and more professors degrade in their teaching. Sounds good huh?
at 5:10; what ll b sequence number if we have the window size n=3,, which can not be represented in power of 2?? In this case what should be added or subtracted for the sequence number.
Correct me if I'm wrong. Let's assume we have two stations A and B, will it be correct to say that when using Go-Back-N ARQ or other ARQ protocols one station is only sending useful data and receiving ACK another is receiving data and sending back ACK. After all frames are sent they change roles. And if this statement is true, how do stations initiate their roles when they have both equal parameters and access to media? Who is the sender at the first step)))? Thanks in advance.
