Network Devices - CompTIA A+ 220-1101 - 2.2

A+ Training Course Index: professormesser.link/1101videos
Professor Messer’s Course Notes: professormesser.link/1101notes
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It takes more than a single router or access point to operate an enterprise network. In this video, you’ll learn about switches, routers, patch panels, PoE, and more.
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[@coldCoders]

when you read his captions with no audio at work, and can stil hear his voice inflections, you know he has had an impact on your life

[@azeywz]

This is a 2000 dollar course on youtube.. for free................... I respect this sir

[@Potential20]

$2000 course for a

[@dumplingsuwu6691]

It's an amazing course for sure, but it's just a small part of all the info we got to learn it's not a university degree 😂 to be worth 2k but I get your point. I love these videos and they are priceless ❤

[@jasonwong4334]

it's priceless because it's free

[@andresmenacho2074]

@@dumplingsuwu6691 my community college has CompTIAA+ course for in-state students $800 , out of state $2800.

[@Accuni]

I went in to A+ studies for just a general introduction, but I'm beginning to love network stuff the most so far. Somehow it's been the most interesting to me, maybe because hardware is really fun to think about and visualizing how a network and its traffic functions is very interesting as well. It's all a sort of puzzle once you learn every function. Thanks for these videos as always!

[@VesonoYT]

The networking stuff is what i lack the most knowledge in and it is by far the most enjoyable to learn. it’s like a highway of information

[@Accuni]

@@VesonoYT so true! we often take for granted what goes in to something seemingly as simple as using the internet and wireless devices. and it sure it a packed highway

[@alexanderchamblin3019]

Well..... thanks for sharing. :)

[@Titburst]

@@VesonoYT I don't know much about anything outside of hardware.Learning Networking stuff has been fun so far

[@SEArkaTech]

The term "professor" def applies to Messer. Plenty of folks out there that know this stuff but very few who can communicate it as an excellent instructor.

[@catsforhire9116]

I ordered the "all-in-one" A+ book back in September, read it cover to cover, was a little bit overwhelmed at the abundance of information but I kept at it and thanks to your videos helping bring topics full circle I'm going for the certification in May!

[@user-oc3ed8ox4u]

Good luck. Testing in June!!

[@garrettwilliams6246]

professer messer = G.O.A.T.

[@garrettwilliams6246]

🐐

[@EDU670G]

Why

[@Terences123]

This dude is amazing I left my online class with slides of information and one video to the next I found out more than my class.

[@snipex111]

That is 100% true . Ig u eatch these videos and do his practice exam u more likely to pass .

[@stuckintb]

I'm learning more than a book can ever teach

[@stoiccrane4259]

Patch panels are pretty remarkable considering how they simplify such a sophisticated series of connections. Seems like something I'd be interested in working with!

[@superflyj416]

I don't understand the purpose of the patch panel. If each input has one corresponding output, why not just go straight to the switch?

[@elyse_ofgeese]

@@superflyj416 Hi John, I can help with this question. It's to make the IT setup neater and more modular. The patch panel terminates all the cable routes from all the outlets, should ideally be labeled so you can easily tell which outlet you are working with. From there you add your switches and network devices and that makes it easy to swap out and replace those anytime you need to, versus if you had your cables terminated directly into your switch. You don't technically need the patch panel, but it is a standard termination point that makes things much neater. Otherwise, you would just have a bunch of cables coming out from the wall to the switch, you would need some sort of hole for them to come through, and it will just be a lot harder to work with and uglier to look at. If you ever get to see a build out under construction before the cables are patched up, you will see what I mean :)

[@BigGlokk]

@@elyse_ofgeese Out of curiosity as i learning and want to better understamd, what situations would prompt the RJ45 connection being moved from one Switch to another after a new person is assigned to that computer?

[@JJFlores197]

@@BigGlokk You wouldn't necessarily move connections if a new person is assigned that same computer that's in the room. That is unless the computer is moved to a different location. Sometimes you unpatch (disconnect) unused data drops. If you have a room with 5 drops but only 2 are used, you can usually unpatch the other 3.

[@elyse_ofgeese]

@@BigGlokk I just saw your question! The runs that terminate between the Ethernet ports and the patch panel are not really likely to change or move but cables can get damaged or go bad and may need to be replaced from time to time. On the other side, at the front of the patch panel, you may move things around in the network closet as the network configuration may change over time, you may upgrade, add, remove or replace devices. There is unlikely to be a lot of change at the patch panel. I would say it’s primarily an interface that allows you to connect the Ethernet ports to your switch(es) in a neat and standard way.

[@abdullahmahammadmir5541]

What a Meticulous Effort -- deserve an award

[@noahtah1511]

Fascinating thank you for the videos I plan on scheduling my test in September!

[@dben9986]

Good luck!

[@peterrosqvist2480]

Did you pass?!

[@theyfw.ariiiii]

I would love to know how the test went too cuz i take mine in 2 weeks 😂😂

[@Kyle-hf8dq]

@@theyfw.ariiiii how did you do? did you see anything that you did not expect?

[@jgsource552]

@@theyfw.ariiiii Did you pass? If so? Were these videos really helpful in doing so or did you have to use other resources?

[@Yeah_THAT_Greenville]

Thank you professor! studying for the core 1 exam after passing the core 2 exam, your videos have been very helpful !

[@pauls6671]

Networking has been the toughest subject on the classes, at least for me. I can handle 1 computer on a network, and in a network it can be 5,10,20 or more computers, I tend to get lost with all the settings and other things. What should I do to prevent stress, over this

[@JJFlores197]

I think in the beginning, its good to not really focus on the specific number of devices on the network. What matters at this point is understanding the general network concepts like what IP addresses are, the theory behind them, MAC addresses, etc Take notes, review them, and practice a lot. It will eventually "click". But yes networking is a tough subject for a fair amount of people. A lot of it is so abstract and it takes a lot effort to really wrap your head around it and understand it. Sometimes you have to watch different videos explaining the same thing and it will eventually make sense. For me, subnetting was the most difficult part. I'm still not great at it, but I at least understand the general idea behind it. I took a few Cisco courses at a community college and the subnet section was my least favorite. It wasn't until a few years later that I watched a few videos and it made a lot more sense.

[@arshdeepsinghcheema7162]

Thank you for this free hug of knowledge professor!!! really appreciate your efforts

[@wcoleman5555]

so much content...i watched at slower speed. Thank you for this!

[@Glenners]

The highest speed DSL available in my location is 4mbps down 0.5mbps up lol. Thanks for the videos!

[@noahwedding6992]

Heshably proftuia a nov licktabo nichsta braj!

[@junova7503]

you're probably either past the 10kft point he mentioned or the copper in your area is corroded / failing. That or the equipment at the CO is exceptionally old and only supports something like DSL (not ADSL).

[@junova7503]

Either way, it's a rough situation which is only getting worse with time as many rural areas don't have cable or fiber infrastructure in place.

[@senditall152]

Thank you for your hard work!

[@cmichael2967]

Right now for me, after God is Professor Messer

[@senjurooo8254]

Just found out about Professor Messer 3 days ago to study for A+. He is my God now.

[@dumplingsuwu6691]

Lol he is surely God Sent

[@montassirben8560]

thank you sir

[@stoiccrane4259]

A question about PoE. Does the power run through the ethernet cable connector to both provide electricity and data or is PoE just a reference to a switch that provides power and ethernet connections through 2 different cables? If it provides power through the ethernet cable that's pretty incredible!

[@professormesser]

With PoE, data and power are using the same cable, and it is pretty incredible!

[@DCUOCover]

it doesn't refer to the switch it refers to the standard the cable itself is capable of delivering power up to 100W with its latest iteration, which requires POE equipment which would be endspan power or midspan which is used when you don't have equipment that provides POE you use a poe injector

[@Corswain]

I've heard we can use power outlets in our homes to connect devices in a network too, instead of normal network cables. So I guess it can go both ways, Power over Ethernet and Ethernet over Power? Marvellous. I wish I knew how it manages to do that.

[@DMKleinArts]

​@@Corswainthey're called Powerline Adaptors, and they can be very handy if a computer is going to be far from the router or wireless access point. It's a pair of plugs with an Ethernet jack, and it's surprisingly easy to set up. They're able to talk over the power grid and it gets speeds at least as good as wifi as far as I'd checked.

[@breadwinner-5460]

Thanks

[@jasonwong4334]

why would you even need to change the RJ45 to the switch connection if you change desks? is it for the SNMP data or other individual data and tracking that you may have for each indivudal person on the managed switch?

[@jasonwong4334]

or do you mean like the RJ45 to the switch connection may only have 3 being used and the other not plugged in, and if they move desks, you would move it because otherwise it's not connected to anything? i'm on the assumption that all the RJ45 slots on the patch panel are connected to a switch for each computer that is also already connected via the patch panel, rather than leaving them out.

[@lquezada914]

You would only move it if you are using the switch to separating departments and not utilizing VLan's either cause they don't want to complicate the network. Unless it one of those WeWork spaces where its different companies using the office space and they have there own equipment in the closet. That's the only reason I can think off.

[@jasonwong4334]

@@lquezada914 thanks

[@junova7503]

52Mbps down, 16 Mbps up are not common on ADSL. Those speeds are only possibly on VDSL and even then you'd have to be within about 1kft from the CO. VDSL falls off at about 4kft from the CO and past that you'll likely be on ADSL2+ which caps out at 20Mbps down, about 1.5mbps up.

[@UknoMySteezz]

Can a firewall also be considered a default gateway? Anyone?

[@reecemcclintock2294]

thank you!

[@user-bg4ri1zb6i]

Power over Ethernet (PoE) is very convenient