Introduction to IP - CompTIA A+ 220-1001 - 2.1

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Internet Protocol is the most popular technology on today’s networks. In this video, you’ll learn about the basics of IP, the differences between TCP and UDP, and how port numbers are used to transfer data between devices.
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FOLLOW PROFESSOR MESSER:

[allooutrick]

An example of UDP might be online games. With so many players all needing constant real time updates, the formal process of TCP might prove too slow and unnecessary. If a player lags behind everyone else, the game needs to keep going and that player that fell behind will get immediately caught up once their network connectivity issue resolves itself. They only need to know what's happening in that moment. The past actions might likely be irrelevant.

[celissecarr]

This made it click! The delivery analogy cleared a lot of things up for me.

Plus, something else that helped me, it is like the TCP boxes hold valuable data that need to be signed for at the door once delivered. UDP can just be dumped on the doorstep, haha.

Thank you, Professor!

[JakeDaines]

That port/house analogy was genius. It really made ports click for me.

[ARH]

I've been in Law Enforcement for several years, but now I'm looking into a career change into the IT field. Coming from no IT experience, I've found your videos to be the most helpful resource I've discovered. I can't wait until I get my A+.

[emanx]

Holy cow. I'm entirely new to IT and I'm studying to do the A+ core 1 and 2 exams. I'd covered this topic via a different provider but honestly this video was much more helpful with examples that fully made sense. I still don't understand everything but its making a lot more sense. Thanks so much for this video :)

[bblackab]

The analogies Professor Messer uses are pure genius.

[stoiccrane]

I love this! Seen similar topics mentioned by different providers but here with Professor Messer it's staright to the point, no useless joking or banter, and he ends the video in a way that compels me to want to hear more! Instead of dragging on to the point where it's difficult to maintain focus.

[sistersbride]

This guy used some great analogies.thanx professor for clearing tcp and udp in my head

[marcosgarridoutrero]

The content of this video and the analogy between network communications and mooving out of your house is plain brilliant. The quality of your material regarding Core 2 was amazing; and Core 1, so far, is the same. I just had to stop the video to let you know this. Thanks a lot, man!

[JoaquinRoibal]

Thank you Professor Messer for your great videos and best wishes to all fellow students! I have watched your A+ videos, I am going through a second time and taking notes to use as flash cards, much more time consuming but helpful to have the information in a different format that I can take with me. Also the process of writing helps me to learn and retain the information. I purchased your study guides from your site in order to support all of your hard work. Thanks again! Taking the test this week and doing some final review.

[MrSlouke]

A good teacher will always teach us something by giving us an example on something that we already know to learn something new, you did that, I read about this in the book and it just wouldnt click but with your analogy it all clicked, thank you!

[skullnarrative]

Thanks Professor Messer. I really appreciate how you distill this information in such a concise manner.

I'm currently watching your videos while also using the Exam Cram book for CompTia A+. I combine my notes from both sources and create note cards to study with using the Anki application. I'm amazed at how much information I've been able to learn and understand based on this method.

I admit I was initially skeptical that your videos could offer in depth coverage of the various domains. But I know understand that you went for a quality over quantity approach.

I plan to buy your Core Notes and Exam bundle for both Core 1 and Core 2 as I have found your lessons so valuable.

[eukelarTV]

I haven't taken my test yet but was able to pass a small assessment and land an interview for a level 1 technician at a network operations center tomorrow morning thanks to these videos, wish me luck 🤞 .

[nikvalinsky]

How does the client "randomly" select the port number? What are the criteria it goes by?

[kyleboynton]

Oh my I finally understand how this works. THANK YOU

[SpicierTaco]

I've been working in the IT support realm for the past 2.5 years, and only today, the Network side of the certification actually makes sense.

[KAAPNW]

You're a master, I understand fully how IP works now

[Anukii]

What an EXCELLENT analogy, thank you so much. Everything has beautifully clicked. I feel like my knowledge of data transfer has been somewhat there, but fuzzy. This absolutely has made everything clear!

[RonaX]

I wasn't aware of non-ephemeral / ephemeral ports during my years in the IT field. Thanks a lot!

[DonaGeek]

Ah you are awesome professor! Made things a lot more easy to understand