watched all 3 lessons and now I can say subnetting is so easy I can do it in my head without needing to write it down. You are explaining it really well and I think it would be a good idea if you would do more of this.
concept is really clear and easy to understand, thanks. using other lecrurer courese but really confuing about the class system , you are doing it great .
Thanks for the great tutorial, and I like how concise you are in your instruction! I'm actually getting "it", finally! Quick question, is there a shortcut when determining the bit-wise AND operator between the working octets of the subnet mask and the IP address? I don't mind jotting down the 1's and 0's, and playing matchy-matchy with the 1's. Maybe all I need is to keep practicing. I don't know how many questions on the CCNA exam are on subnetting, but I've read and heard horror stories about people tripping up on that section. I'm just happy I've been able to grasp the concepts. Subscribed!
Hi NavMiguel! Thank you for the great comment :) The most helpful things to do to make you fast at IP addressing and subnetting by hand and in your head will be: 1. Remember the chart which is super easy - 128 64 32 16 8 4 2 1 2. For subnet masks remember how these add together - example1 128+64 = 192 example2 128+64+32 = 224 example3 - 128+64+32+16+8+4+2+1 = 255 3. Remember that where there is a 1 in the subnet mask determines the network/subnet ID. 4. Become fast at identifying the value of the last bit in a subnet mask. For example if the subnet has a /23 mask then that 23rd bit has a value of 2. Another example is with a /30 mask - that 30th bit has a value of 4. This will help alot with subnetting and is also taught in my subnetting videos. Keeping these things in mind and keeping on with the practice should help it happen faster for you, but yes ultimately it does take a good bit of practice :) I hope this helps and be sure to watch the subnetting lessons!
Hi Karthika Kumar a loopback can serve some different purposes but the primary reason for any loopback is testing. In the case with a a loopback ping where you are "pinging yourself" it is testing your network interface card and the TCP/IP protocol stack on your local computer.
Hi, for this is really great to refresh. But is there a way can also easy to explain/understand how to counting network host amount when there are question asking more than standard /24 or less than /24 segment? Thank you. I am still very confuse on this calculation.
Hi there. You've helped me a lot with your videos, but actually I know a lot of students who don't know the English language that well. Would you be okay with me making a Dutch translation of your video's and post them on RU-vid to help other (Dutch) students? Let me know!
Yesterday I resumed my CCNA classes, I dropped the classes because of a health issue. I already learn and did subnetting in ITN, now I'm in SWRE and came here to refresh my knowledge. Thanks a lot for your videos! (I watched them since ITN and even I save them in a playlist full of these IT and CISCO topics)
u explain better then my course professor rly. Im kinda sad for paying but he does his job at least the order of stuff and all cuz i wouldn't be here without him. Anyway.. will watch more of ur vids about networking keep up the good work
Clear and concise. Thanks for this playlist. Was searching IP Addressing and Subnet Mask for my A+ (Objective 2.6) certification and came across these videos. Extremely helpful!!
8:15 - OOPS! 65,535 is incorrect. The magic number is 65,536. When doubling 32,768 you need to get an even number not 65,535. Like you, I'll struggle with 2^14 & 2^15 but 65,536 got hardwired into my DNA from my days of only working within 16-bits.
