I couldn't see professor, Teacher, and Trainer like you in the IT world and on the Internet as well, the way you explains each and every topics that's fantastic, No need book and notebook just your training video is enough to understand and memories!! Thank you so much, God bless you!!!
Sunny, I watched all your videos. You are a great teacher a life saver! I cannot thank you enough. I wonder could you do a video about buffer overflow in the future and thank you.
The animated video helps a beginner a lot Sunny. You've been doing a very good job on explaining with these videos. I'd also request you to make your own website where we can read each topic which can be referenced for exams and interviews. Many thanks:)
Brilliant explanations sir ! I love the way you make me wander about the answers ! You are a real Teacher because you wake up the way to thinking about !
Good afternoon Sunny, please take a look at DNS over HTTPS or (DoH). It is a very new and interesting protocol that should be a disruptive force in all of tech.
if the switch just uses a blanket broadcast to every port every time, then this helped out a lot. I have to scenarios that i would like some clarification on, please: Scenario 1: Let's say the initial frame loop from Computer A to the Web Server was able to be stopped after one loop. This mean that every switch now has that source MAC in it's SAT pointing to every switch to switch connected interface because each interface has now received that frame with that source MAC, correct? Now let's say that the Web server sent a frame to Computer A. now there is no need to broadcast because every switch has entries in it's pointing to multiple interfaces for this destination mac. The frame would just keep looping between all the switches, and Computer A would keep receiving the same frame. Is this correct? Scenario 2: If there were only two switches connected using two cables, would the loop only occur until each switch's SAT populated? I mean obviously, you would have to deal with each loop as it happened, but eventually it would resolve itself even if STP was not configured, correct? Once the SAT populated, each switch would not have to broadcast. I think the problem then would be that the SAT would have two entries for the same destination MAC for each port that the switches are connected to. This would mean that the receiving node would keep receiving the same frame twice. Am I correct in thinking this?
I have two videos: 1) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fIZhDl35_XY.html 2) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KCHO7zlU25Q.html
Will the Web Server not reply back to A?, and I think if it replies back to A some packet, the switches can learn MAC address from B's response. And loops can be finished..
Nope you need to learn how the sat table of switches work. Switch 4 in this example already knew where the webserver was because it’s CONNECTED to the device. Switch 4 will never know about PC A because it’s not directly connected. Hence why broadcasts on layer 2 are normal
1. Subnet the following IP network: 10.90.0.0/20 to accommodate 5 subnets, each subnet will subsequently have 500, 120, 65, 30 and 15 PCs. For each subnet find the subnet mask, network ID, broadcast IP and valid host range. Place your subnetting plan here. Can you help me to solve this sir?
