Subnet Mask - Explained

► Get the COMPUTER NETWORKING audio book here ►amzn.to/3rxrkfi (Amazon affiliate). Just get the book by signing up for a free 30 day trial of Amazon Audible Premium Plus.
A subnet mask is a number that resembles an IP address. It reveals how many bits in the IP address are used for the network by masking the network portion of the IP address. This video also does a short lesson on subnetting. Subnetting is breaking down a large network into smaller networks or subnets.

[@PowerCertAnimatedVideos]

► Get the COMPUTER NETWORKING audio book here ►amzn.to/3rxrkfi (Amazon affiliate).

[@GabberHeadzNL]

Many many thanks to you PowerCert Animated Videos, because your explanations and break downs are a big help in preparation for my System and Network Admin Certification and please be kind enough to let me wish you all the best before i drift away a bit from subnets and ask you about topologies and your respected opinion on how we decide which topology to use when building our networks are there some rules or is it decided upon a size of network or something else completely and what guidelines should one follow when creating a network for lets say 30-50 hosts? Once again thank you for all of your hard work and effort put in your videos and for the assistance regarding my question,best wishes

[@raihanirawan5739]

That Was A Good Fire🔥🔥🔥🔥🔥

[@jamesphillips7656]

Thank you!

[@jamesphillips7656]

Looking forward to a video about subnetting one day!

[@misternormL]

At 14:50 you didn't show or explain if the networks shown all have the same subnet or not? They wouldn't right cause they'd still be able to talk to each other then?

[@californiadreams1170]

In 18 minutes learned more than in the entire Network course. Thank you!

[@kanerodgers4663]

Same. Blew my mind when he talked about how the /24 means there are 24 1s in the binary notation

[@xessences_7806]

Same my Teacher was explaining how to do this and it went right over my head. But this individual was amazing in explaining it

[@jamesocker5235]

Excellent break down thank you

[@nadulk]

yeah

[@wilhelmbittrich88]

Sounds like a crappy network course then.

[@Christian44326]

Can't believe I sat 6 hours in school today, failing to understand subnetting and you managed to successfully explain it in just 18 Minutes. Just wow. 👏👏👏

[@trigotima4685]

stop going to school lmao..whole internet teaches you in 1 month all the stuff school tries to teach you in 1 year

[@kbt.nation8505]

​@@trigotima4685The facts of this statement

[@maggiemaeasmr]

I have my associates in IT and I’m currently working on my bachelors degree in Cybersecurity and information assurance. I cannot explain how much this helped. None of my classes have explained this subject as eloquently as you!!! Thank you💛💛💛💛

[@dineshpriyankara7920]

exactly same here

[@Mangokyaw]

really?

[@Ness97700]

WGU?

[@user-jk4hr6fx2n]

I am currently taking IT courses now and I majorly agree with your comment. Watching a lot of these videos explains all this stuff much better I think because I'm a visual learner and my classmates even wait for my response to discussion questions cause I explain it as best possible as the videos along with giving the link to where I've learned the videos. 👍👍👍👍

[@md1987]

Been IT for almost 20 years, I hate it. If you want a future in IT, get into military and do IT there, get all your certs, have your degree by them, and get a job using Skill bridge. This is of course if you are in your 20s…

[@user-no9wn8eo4j]

I've been struggling with the subnet concept for months now, I have no real experience in Networking. I've watched a lot of different videos, read books, but no resource provided me with the full logic and method of creating a subnet. Now it all makes sense. Thank you!

[@user-eq6uj4uo7g]

Couldnt agree more. I kept scratching my head with much much longer courses that are very well respected. Watched this and he brought me easily to that Ah ha moment. I was like , why has no one else tried to explain it so easily

[@user-no9wn8eo4j]

@@user-eq6uj4uo7g my thoughts exactly. I'm less than 4 weeks from my CISSP exam, and this video helped me a lot. I watched it a few times, made my own math on random examples, all in an effort to reinforce the knowledge and retain it. I retain knowledge best when I understand the logic behind something. Good luck on your journey!

[@dsandoval9396]

One thing that I could not for the mental health of my instructor get past, was the "1's" part and coming up with the subnet mask value. I understood putting the "1" under the bit value position (kind of), but I couldn't understand the rule to know what positions to use/mark. Like "why not start at the lower end?" that I failed to ask him at the time. I couldn't make that last hop to relating _that_ specific action, to the end value of the subnet mask value. Another instructor was opposite us overhearing my instructor try to explain from a dozen different ways when he blurted out, *"You count the number of unbroken ones in a row."* 🤯 It was literally that last little piece of the puzzle to bring everything, concerning the subnet mask subject, together in my head.🤦 That memory is going to stick with me for a while.

[@masontonks1630]

started a job as an infrastructure technician and you've been carrying me through it lol

[@Zed0086]

Did you have to have a cert for that position starting out?

[@randeepmk4061]

Instead of lol a thanks would have been nice

[@ICSizemore]

How did you get that job if you don’t know this stuff?

[@pablocarballeira4443]

​@@Zed0086In EU yes,but who knows where this person came from

[@DivinelyGuidedbyYah777]

A fine example of being a good talker. You talked your way into a career. How’s it going for you now? 😂

[@aminam9201]

Albert Einstein was right, he said: "If you can't explain it simply, you don't understand it well enough!" this man understands it well that is why everything in his channel is so simple and easy to grasp! teaching is a talent, the will to give your best, dedicated to your work,... there are those who have a good understanding and professionals, but not talented for teaching, some others want to show off, that will ruin everything, that is why sometimes some are not professionals but have teaching talent better than those professionals with better understanding.

[@electricz3045]

Amen

[@venkateshh5607]

Very true

[@onepiecebarca]

he didn't say that

[@icesystem7]

MAN! YOU ARE INCREDIBLE! I was reading for hours cisco manuals barley burning my brain! This here is gold! That's how you teach! Thank you very much for your hard work!

[@Stronkbeans]

This short video helped make more sense of this subject than both my college professor and an entire book module discussing it. Thanks a ton for this.

[@brodriguez11000]

I see the subnet mask as a binary window unto the IP address.

[@randallvargas4457]

This is the best explanation of what a subnet mask is I've ever heard. Thank you for your content!

[@PowerCertAnimatedVideos]

Thanks for watching!

[@ross-morozov]

Totally agree!

[@Jman20286]

Agreed 100%

[@talonsid]

The old Cisco flash video game was the one that helped me back in the day.

[@GeoFry3]

Agree 👍

[@andrewquilpa4901]

This is some of the best content out there today regarding this topic! Clear, concise, and the visuals are incredibly helpful. I'm honestly surprised this isn't considered "Official CompTIA content" but also grateful it's available free on KZbin!

[@phillipholmes7144]

I passed the CompTIA A+ Certification credentials in 2003. I don't remember any of this stuff. 🤣

[@halo2bullseye922]

It's great.

[@an3k]

In over 30 years of IT, this is the very best explanation of network masks. Thank you very much for the video.

[@TheBeardedBuffoon]

I'm beginning a career in IT and am trying to get my head around the basics of networking. I felt so overwhelmed with the idea of subnet masks and subnetting, and other videos were not helping. I'm so glad I came across this video, as I feel like I actually understand what these are for the first time! Thank you so much.

[@summerdays5380]

Damn, I'm kind of addicted to this channel's content now. I came here after giving up re-watching my professor's 3 hours lecture focusing on this very concept and using MS Paint to explain. I honestly didn't expect to find myself more interested in actually learning computer network but when I watched this video it helped me understand and made me more invested in learning more about computer network. So I have been on a rampage watching video after video increasing my knowledge. Keep up the good work and please keep posting more videos!

[@PowerCertAnimatedVideos]

Thank you :)

[@kuldeepsingh-dh2et]

I do respect your hard work. Even I could not properly understand this topic in my networking class. But this video is amazing

[@PowerCertAnimatedVideos]

Glad to hear that

[@jcrackification]

@@PowerCertAnimatedVideos I'm in the same boat. I studied IT a decade ago, and subnet masks have always been like the dark arts to me. This video clearly explains how they work in a way I wish my instructor had all those years ago.

[@thefamousdjx]

This is an example that nothing is really that complicated if you learn from a great educator, and unfortunately few teachers have that skill. I remember in high school geography friends from another class used to always excel better in that subject and seemed to grasp concepts easy. Towards exams our usual teacher wasnt there so they put everyone under one class. That day my mind was opened and I realised sometimes you not dumb, its just that you havent been taught right. The teacher truly explained things in the most practical way that made everyone just get it

[@thefamousdjx]

@Claude Belanger Sometimes it's not just pure overthinking it's just that someone has made it seem more complicated that it actually is, causing others to overthink and fail to grasp.

[@mrtennessee1o1]

Hands down this 17:54 minute video gave me 100% clarity in understanding more about the subnet mask and subnetting. Your teaching style and simplistic videos have a tremendous effect! This definitely gives me a boost in preparing for the Network + certification. Thank you!!

[@charlesjackson4678]

This is the best Subnet Mask tutorial that I've ever had! It's so nice when someone not only understands, but can also teach a discipline.

[@harshsharma03]

Talk about lucky timing, just yesterday I was struggling to understand subnet masks.

[@andrewalonsi]

I thought I was the only one!!

[@enterchannelname7568]

@@andrewalonsi same!

[@creativeworx47]

Me toooo..

[@rehaanmalik2285]

Me too

[@jameswang489]

Dude! I am a software engineer who has limited knowledge of hardware, you don't even know how educational and useful your videos are to me!

[@Hjominbonrun]

This guy should be employed at a tech teaching academy. I learnt more in this video about networks than my entire life.

[@paulg6340]

As usual, FANTASTIC video. Your commentary combined with the animations really helps me understand whatever topic you are covering.

[@andrewbaker6346]

Brilliant! I've spent a couple of hours trying to understand this by watching other presentations but this nailed it. Thanks for a really clear, understandable explanation.

[@hopehouston9075]

I can't thank you enough for explaining things so clearly! Whoever created the animations nailed it!

[@slevinlaine]

Exactly!!!

[@ImposterBraum]

I love how the animators manage to fit jokes in the animation, GREAT JOB!!

[@LarryMenta1]

You have no idea how much I learned from your videos. I learned more from your channel than actual University clasess, your explanation and visualisation is a thousand miles better than anything I could find in books and courses. Thank you so much!!!

[@X400DYL]

Stumbled on this, I've been in Industrial IT / Automation for 30 years give or take, and this is a great explanation, simple easy to understand, great job

[@DabooksofEli]

beautifully explained. I am in the middle of taking the Google IT support course and they are covering Subnet Masks. They over complicated it to the point were I did my own research and stumbled upon this video. Thank you for making it easier to understand!

[@TheClassyNimhan]

Same with me!

[@marwantamer9590]

Yeah! Same here, i don't feel that the instructor explains it well enough so i always comes here to youtube.

[@DASsoulstryker]

Okay, thank gawd I'm not the only one who felt like this.

[@konteezy203]

Omg me too! Glad I'm not the only one who thought the same. I feel so much less like an idiot. Thanks lol

[@hopehouston9075]

SAME! I'm learning to use their stuff as a guide to what to study since I'm new to IT.

[@jeanclaudenduwimana7787]

I have a degree in computer science, however I never had a chance to completely understand subnet mask the way you did, I'm glad this channels exist to make things easier for everyone. Thank you.

[@harringff]

There is. no way anyone can come up with a better, simpler, shorter explanation that this one! Thank you for posting the video.

[@jxd11]

That was a GREAT explantation ! Every time I struggle on my networking course I come to you for help ! Thanks again for breaking it down my man !

[@danootz]

One of the few tutorials that I've seen that really simplifies the who subnet mask subject matter! Excellent work, as always!

[@yreddy1]

I am a novice at networking and over the years I have wondered what the /24, etc meant. I could never find an explanation. No one has explained the slash notation better than you!!! Love it! I am a subscriber now.

[@cristobalvalladares973]

I've been a network engineer for years now. Will begin studying cyber security soon. I forgot most of this stuff. In practice it is automated. So I was a little nervous. Ran into your video. I'm feeling much better now. With the illustrations you hit a home run. Thank you sir!

[@ArchanaYadav-10]

It's just one of the most valuable easily comprehendible piece on subnetting. I have been struggling from quite some time to understand, but this finally served my objective.Thank You.Hoping more on Encryption !

[@randytauren]

broadcast storm explanation is the best i've seen so far on youtube!

[@Mr.Dextra]

I absolutely love your explanations for subnetting. They make so much more sense in my head when you explain it the way you have.

[@syedaquib1082]

This 18mins video cleared all my doubts regarding subnets which i couldn't understand since ages and after watching tons of videos. This content is far better than what we learn in university. Thank you so much👏

[@neilkod]

This was terrific; thank you. You've demystified a ton of networking concepts in a concise and succinct fashion. Thank you very much!

[@teekomeeko]

After 8 actual months of stuggling to understand subnet masking when it came up in my independent studying, this video drilled it in in one go. I went from wildly nervous about the exam to confident after discovering this channel. Thanks for all the help, truly.

[@Ronnock]

I truly appreciate the elegance in your narration and animation. I believe a lot of other KZbinr's have a lot to learn - cut the fluff just enough to be infotaining.

[@hedgeearthridge6807]

Wow, this went from being really complicated to really simple very quickly! It also answered my question as to what the /24 means at the end of my inet IP address. Thank you so much!

[@alperkins1109]

PERFECT. I was fortunate this quality of online instruction did not exist when I was an InClass instructor of this material. I would have been redundant. Congratulations.

[@ichiminty8240]

actually watchable and listenable, each time my teacher talks about it i instantly lose focus. This is clear and i can understand.

[@FabioFortune]

Your videos are fantastic. You explain things in an understandable way and the visuals help a lot. I'm taking a network course and you explain these subjects better than my teachers and for free. Can you do a full video about subnetting? Thank you for your hardwork and keep going!

[@supriyochatterjee4095]

Great to see you back Sir, we want weekly videos from your end related to all kinds of technical issues and practical troubleshooting scenarios for Networking and new concepts related to Networking and Network troubleshooting

[@Slim_Charles]

My teacher took almost 45 mins trying to explain this and he did a pretty good job of it but I was still a little fuzzy. You broke it down and made it super easy to understand in less than half that time. I hope you’re getting paid for this lol.

[@user-ew2pj1bb6j]

Best Subnetting video found after watching 30+ videos. Finally got the core concept. Very clear. Thanks

[@mikethree4541]

Sir, this is the best explanation i've ever heard. I have a big project in Django coming up, and i needed to refresh my knowledge. I actually didn't count on doing that in 18 minutes, but you sir did it! Big props, like, and subscription.

[@PowerCertAnimatedVideos]

Glad it was helpful!

[@amjster]

What else can I add to the existing comments that has not been expressed... well done sir. A difficult subject broken down, explained and described so well that I *finally* understand it. The best explanation I have ever heard on this topic. thank you for taking the time to curate and share...

[@PowerCertAnimatedVideos]

Thank you kindly!

[@thomasbravado]

I like rewatching IT videos like these every few months and understanding them better each time.

[@shahzadhuq]

I love the passion and attention to details that you put in your video. It’s a joy to learn from this channel!

[@preeminent2192]

I am new to networking but the videos are very easy to follow and love learning. Thank you!

[@hooniyo]

Your videos about networking is just amazing. Clear explanation and intuitive, fun animation make unfamiliar terms easier to understand. I think this is one of the BEST Network lessons.

[@PowerCertAnimatedVideos]

Great to hear!

[@PowerCertAnimatedVideos]

Who?

[@soundmindwar]

I literally stopped doing homework because I just didn't get it. In under 18 minutes on youtube, I can now actually finish my homework. You sir are a life saver and I wish we had more teachers like you

[@PcGaMeRgUy420]

You explained this so much better than the certification course I'm taking. Your videos are a lifesaver. Thanks!!!

[@Arbnor93]

i'm self teaching myself computer science and you make it so easy to understand its incredible

[@MrReznov47]

You have the best ways of explaining I ever met, thank you very much! I will definitely buy your audiobook

[@santoshloke]

everytime I watch this video, I am blown away with the simplicity of the presentation. Once again, thank you !

[@ElderBard00]

I just want to thank you for the breakdown of subnets. This makes it easier for me to approach the subject with less anxiety. Thank you!!!

[@tubadurantdoda]

Thank you sooo much! Today I was struggling with subnet mask calculations and I even read articles and such, but still could't figure out how to convert IP and Subnet addresses to binary, even though, I made binary to decimal calculations before. I thought IP and Subnet address calculations would be calculated differently, but turns out that I already knew how to calculate them but just didn't know they were calculated that way, because I couldn't find any explanation about that until I watched your video. Thanks a lot. I feel very confident about doing the calculations now.

[@PowerCertAnimatedVideos]

Glad to help...Thank you

[@MorganVerstuyft]

I cannot tell you how many "ah-ha" moments I have had while watching your videos. I appreciate them so much. You take concepts that are so difficult to understand and you break them down into terms and language that is easy to follow. Thank you for this video as well as all your other videos.

[@hyruleworrier3021]

I’m finally able to understand how subnet masks work thanks to this video! You’ve explained it better than my networking class and a plethora of other KZbin videos. Thank you!

[@FindingMoreInLess]

I cannot express how thankful I am for this video and how much clearer it made things! Thank you!!!!

[@jasgarcha4783]

I can't thank you enough for all the excellent content. For an IT newbie like myself, your videos have made the mundane easy to understand. In fact, I feel I want to learn more! Thank you so much and PLEASE, keep up the great work👍❤

[@ssjay01]

I have taken many Udemy courses and none of them have explained the general subnet part like this one. Many instructors struggle to explain this topic but you make it very easy. Keep it up! I just Sub!

[@PowerCertAnimatedVideos]

Glad it was helpful!

[@Babblingbrooke101]

I'm in the Networking portion of TestOut for the CompTIA+ certification, and they are so brief with their info regarding things like this. I found these videos when I wanted to understand ports better, and I'm really glad that I did. It makes so much more sense with this explanation and visuals. Thanks!

[@siggty7]

I just started school for cybersecurity, and the professor tried to explain this and I was so lost!! But just in 17ms you explained it with professionalism, so much easier to understand! I thank you so much!

[@raulsanchez4716]

Seriously thank you so much, this was an amazing explanation. You saved me an entire week of confusion. Especially at 6:32, I was stuck on that, but now I understand, thanks to your video.

[@meriemsouar3288]

I just wanna thank you about this amazing explanation..I really appreciate your efforts to give us such important informations.. This is the best video on KZbin explain everything about subnet mask including examples and book for the beginners on Amazon.. Thank you so much.. I learned from CISCO academy website but I didn't understand..it was difficult for me but after watching this video everything became clearly... I recommend this video for everyone who wants to understand the subnet mask and this channel for learning about the networking in general

[@tramellmalone9146]

I agree

[@leroysimon5692]

👍🏽

[@stefanycarlet952]

Amazing explanation! As someone who is new to all this, your videos are the only ones I actually get. The way they are explained in detail and the animation is wonderful!!! it's all sinking in, thank youu.

[@kyletom6171]

Your presentation on subnet mask’s is wonderful! So simple and easy to understand. I’m very grateful to you!

[@willsolarski8550]

I love your videos-quality, knowledgeable content that in an easy to understand format. Love the animations too!

[@PowerCertAnimatedVideos]

Much appreciated!

[@mark8200]

This would have been so great 2 weeks ago when I was doing my aws cloud assignment, I cracked it in the end though. Good video keep at it

[@gerx123]

I usually never comment under KZbin videos but this quality content just forced me to. The animations are so helpful when taking notes that I can't put this into words. Thank you for this!!!!!

[@ChrisSpikehSebok]

Absolutely excellent video. After 25 years of trying to understand subnet masks and continually pushing my lack of knowledge under the rug, this video explains everything I need to know :)

[@WartimeFriction]

Hey, thank you so much. I'm currently taking a Google Career Certificate course for IT Tech Support and while the classes are pretty decent, these really help fill in the gaps and reinforce the concepts in a manner that's much easier for me to understand. I appreciate the hard work you've put into this.

[@jeromesimms]

Same!

[@ChrisWithACam]

I'm here as well from that course! Lol. I just needed it explained more graphically than they did in the Google course.

[@TheBubbleReview]

Thank you so much!!! You’re very good at explaining. ❤️❤️❤️

[@nsuddeth91]

I work for a major ISP, installing and troubleshooting for businesses. I am trying to advance my career to the Engineering side of the house and I have always wanted to know what the purpose of Subnet masks are. This video has blown my mind! It really reveals the genius of the internet's pioneers

[@birdmanT7]

This is probably among the best videos I have watched about Subnet masking and networking.

[@andrewalonsi]

Thank you so much for these videos, especially for making jokes during the animations, it helps me remember!

[@PowerCertAnimatedVideos]

Glad you like them!

[@jimjones3516]

Good video but jokes about subnet masks make me angry.

[@azureninja1656]

@@jimjones3516 seems like ur a joke ur self...(joke sory no offence)

[@ranjanadissanayaka5390]

hi, I've watched all videos in the network play list. And the journey has been amazing. And thank you for making those videos. 🤔Can you make a separate video on how to do subnetting ??.😀

[@sarahensel3473]

Please never stop creating content! I recently took an entry level IT job and your videos have been incredibly helpful!! Thank you!!

[@memeingthroughenglish7221]

Amazing video, explaining all the small parts, fun animations that were helpful to learn, as well as a good pace! Can't wait to watch more of your videos!!! Keep up the good work!

[@RememberRox]

I LOVE his videos, he makes it easy to understand with examples and great imagery, PLUS she speaks slowly which is great for someone like me who doesn't have english as first language. Neither my professor, nor linkedinLearning nor my boyfriend(who is a network engineer) could help me understand as good as this beautiful man right here. I use his channel as my bible haha.

[@whiskeylinux]

Great content as always! The humor helps me recall things so thanks for that. :)

[@PowerCertAnimatedVideos]

Glad you enjoyed it!

[@antoniowanton2563]

Of all the networking classes I've taken you are the first person to mention the '/ '. Thank you

[@user-rq7cg1xj5e]

Your clear teaching style and animations have really helped me understand some of these otherwise fuzzy networking concepts. Thanks so much.

[@JoeSmith-zu6lb]

I will need to watch this a few more times before getting a grasp of it. LOL

[@kdan3571]

I always got frustrated with teachers who gloss over an important step, assuming that the class will just "get it." You actually break it down to each bit (pun intended) so that we'd understand in depth. Whenever I get stuck, this is usually my first stop. Any chance on doing a video about VSLM? Thanks for your help!

[@bellegraves]

I have never been able to understand this concept until now. Thank you so so so much for explaining things so clearly!

[@bhavaniparuchuri5942]

I'm a newbie in Networking, I've been watching many videos on subnetting but this is the ONLY one where I understood the concepts very well.. Thank You

[@romanokeser]

If you're watching this, tomorrow is your exam.

[@CookingWithJackDaniels]

Mine is in a week, thank you very much 😉

[@gillymetrix2092]

Nah mine is in 2 hours lmao

[@Player-ub9tg]

Did you pass yours? Mine is in 7 hours.

[@mhmmdlitagyev2146]

Naah broo, just 4 hours

[@David-Rymer]

Mine is in 25 minutes

[@ronchambers7972]

My brain exploded 🤯 ...but in a very good way😁 Great info for the aspiring IT learner. And shut out to your graphics team👏👏👏

[@PowerCertAnimatedVideos]

Boom! Not actually a team....just me.

[@ronchambers7972]

@@PowerCertAnimatedVideos Dude... that's amazing. Fueled by coffee? As a video editor I totally appreciate the amount of time you must spend on all the detailed post-production elements that many probably don't notice.

[@PowerCertAnimatedVideos]

Thank you. It's a lot of work and a lot of coffee. :)

[@soeasyastonercoulddoit]

I've never had subnet masks so easily explained. THANK YOU.

[@natalie.p6997]

0:10 : What is an IP address. 1:11 : What is a Subnet Mask. 2:12 : How to convert IP addresses and subnet masks to binary form. 4:37 : Distinguish the network portion and the host portion of an IP address based on the subnet mask. 7:26 : Why does an IP address have a network and a host part? - A: Manageability. 10:20 : Networking audio book recommendation. 11:01 : Subnetting. 15:03 : Classes of IP addresses and subnet masks. 16:38: Subnet Masks in CIDR notation. Enjoy this great video, guys!

[@williamwaugh6050]

Thank you.

[@liamnoah6648]

As always AMAZING video! Usually in books like Comptia Network+ or any Cisco networking training, they introduce CLASSFUL IP Address first [15:10], then CLASSLESS IP Address (CIDR) [14:15] Class A IP Address offers the ability to have around 16 million hosts (2^24) Class B IP Address offers the ability to have around 65 thousand hosts (2^16) Class C IP Address offers the ability to have around 254 hosts (2^8) But, if you only need let's say 1000 hosts, using Class A is not enough (256 < 1000) and using Class B is WAY TOO MUCH (1000 < 65,536)....That is where Classless IP Address comes in (CIDR). The best solution is to use CIDR /22 or 2^10 = 1024 hosts.

[@alexintel8029]

Good tip in choosing CIDR over Class A/B/C. BTW, don't you mean to say "using Class ***C*** is not enough (256 < 1000)".

[@ghostirq]

Wow the way you break things down and explain them is top tier

[@AjithKumar-pk3qv]

Clear cut explanation on all the concepts without deviating from the topic. Thank you .

[@phoenixsinclair2959]

Thank you so much I was stumped in a test and you explained it more clearly in a few mins than my professor did in 3 weeks

[@uzzzval]

I Guess this is the best explanation of Sub Net Masking I have ever came across. Simple and Straight forward. Really very nice !!