Understanding the OSI Model - CompTIA Network+ N10-009 - 1.1

Network+ Training Course Index: professormesse...
Network+ Course Notes: professormesse...
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IT professionals use the OSI model as a common way to describe network operations. In this video, you'll learn about the OSI model and how each layer of the model can be applied to practical networking.
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[@MuseZach]

Not even joking. I literally passed my A+ core 2 yesterday so the timing for the new Network+ videos couldn't be more perfect. I greatly appreciate all the work you do Professor, especially getting all the content out 2 days before the test even releases. What kind of sorcery is this?

[@mrahmedalhamed896]

Congratulations keep up the hustle buddy

[@Yup932]

Same brother!!! We’re on this journey together

[@vaproxia]

Endless thanks prof. Providing free education is saintly.

[@liamheffernan2006]

Passed my Network+ about 3-4 years ago...passed my sec+ to renew them and studying for my ccna now ..these video will come in handy to refresh my memory

[@clintonrazmpour174]

I use the term “Please do not throw sausage pizza away” to remember the OSI model

[@virtualogic]

This is great, and I love pizza lmao.

[@bskarpa]

All Penguins Seem To Not Drink Pepsi 😂 is what I was taught

[@praveshmaharaj4387]

lol you got that from Mike Myers textbook.

[@kristofferryan2902]

This was taught to us at college as well. Please do not throw sausage pizza away.

[@okennym95]

Took a few days off after completing A+ now onto this. Here we go again!

[@madasaad6471]

Just like me

[@randar3]

Here we go again. Just finished my A+ with nothing but Prof Messer's videos. I'm hoping to do the same again with Network+.

[@braumski2]

Man, I watched a couple of videos and came out with so many questions, but you saying that its just a model and to not get wrapped up in the details helped me.

[@jbagga3]

Just passed N+ the other day thanks to your 008 playlist. Can't thank you enough for the amount of content you produce, will be using your Sec+ stuff next.

[@bskarpa]

Which you think would be better to study for 008 or 009? Was it hard?

[@jbagga3]

@@bskarpa I don't have any opinion on 009, don't know much about it, but I will say that 008 was very tough, got a 750 and very happy. They're probably similar in difficulty

[@SunWoodMC]

You missed the layer where most problems occur. Layer 8

[@namanmishra84]

There are only 7 models

[@SunWoodMC]

@@namanmishra84 you missed the joke but dont worry about it

[@Tony_Cannoli]

@@namanmishra84 😂

[@Ni9etyNi9e]

Layer 8 as in the person/operator? lol

[@learnwithenayatkamal5543]

Hi bro is it continuing I mean the lessons

[@MikeCodes]

This was an awesome short and very clear overview of the OSI model. I'm currently studying the OSI model as part of my cybersecurity studies. This short video bt the awesome Professor Messer really cleared up this subject for me! Thank You so much Professor you are The Best at simplifying topics such as these for the new student!

[@nonu12ka4]

can we do comptia security+ without having practical knolwedge of networking or comptia network+ . please suggest sir .

[@pinec0ne]

I know plenty of people who have taken and passed the Security+ exam without ever getting Network+. Granted, having the background knowledge of networking skills will be super helpful in studying for Security+, and that knowledge will help you in your career as well. You might want to review the material in Network+ before or during studying for Security+.

[@ArdxnFX]

Love you professor

[@DomnickK]

I thought we utilized more of the TCP / IP model than the OSI? Further point towards the last quarter of the video when summarizing the packet capture.

[@professormesser]

The OSI model is the standard for networking. The only time you'll see the TCP/IP model referenced is in a classroom.

[@DomnickK]

@@professormesser Interesting, I appreciate the insight. I just started the CCNA and CBT trains with the TCP / IP.

[@floofyotter]

I feel like the OSI model is an academic construct, not truly used in practice. I only come across "networking" with in and in between each layer of the computer stack (iaas/paas/saas)

[@adamcastillo4269]

amazing, truly a professor

[@stephennolan8892]

I recently bought the previous network version study book. Am I okay to keep studying that one or do I need to switch to the new material?

[@affy-mapleleafs]

I have the same question.

[@billystreight8940]

Things can change a lot in the years between test versions. Terminology, best practices, etc. I'd suggest buying the most up to date version for your best chance of passing.

[@stephennolan8892]

@@billystreight8940 copy that. Appreciate ya taking the time to help me out

[@mirianjimenez5205]

Would a VPN fall under layer 2 or layer 4?

[@Kxgxyx]

That's quite difficult. I would say it would usually operate at either layer 2 or 3 because a vpn hides your ip address. But then again, a vpn can go all the way up to layer 7. It really depends on the type of vpn you're using, though. Remember, vpn's can also be applications.