Introduction to Networking | Network Fundamentals Part 1

Introduction to Networking | Network Fundamentals Part 1


Hello and welcome to the Network
Direction video channel. What you’ve found here is the start of a new group of
videos designed to help you understand the foundations of Networking. If you’re
new to networking or studying for a certification like CCNA, Network + or JN
CIA this is a great place to start. For the
first few videos I’m going to assume that you have no networking experience.
My goal is to create a solid foundation for you to build on. In this video we’re
going to start with understanding what a network actually is and some of the
network types you’ll see. We will follow up in part two with a look at how a network
may be cabled and get an overview of addresses. If you like this video please, let me
know with the like button. It’s important to me to know if I’m on
the right track with my videos so a comment would be helpful too. If you want to see more, please use the subscribe and notification buttons. Now if you’re ready
let’s start right at the beginning. What is a Network? So maybe you already know what a network is. Maybe you’ve built your own network at home or help someone to run the
network at school or at your job. That’s okay I don’t want to bore you so if this
applies to you I would like to give you this challenge pause the video and think
of a good description of what a network is if you’ve come up with something
you’re happy with well done feel free to skip ahead otherwise stay with me and
I’ll see if I can come up with something for you at work or home you have a bunch
of devices computers printers TVs and so on you connect these by means of a
network when the devices are connected they’re able to share data this could be
sending a print job to a printer sending an email or streaming video this can
also be used for sharing an internet connection
mostly network users are unaware of the network they’re using as long as they
can browse the Internet do their job browse YouTube they’re usually fine for
all of these devices to communicate they need to be connected together somehow
one way sir plug cables into the devices and connect them to another device
called a switch an example is in a school’s computer lab in this case a
computer in the lab connects to a wall socket with a cable another cable runs
through the wall which comes out at a patch panel this may be in a cabinet on
the wall somewhere in the room or in another room entirely the port on the
patch panel then connects to the switch you might have a switch at home too most
homes don’t have wall sockets so devices are connected directly to the switch
we’ll talk more about how switches work later we can also connect devices
wirelessly a common way to do this is to use a wireless access point a wireless
network like this is also called Wi-Fi an example of this is if you have a
tablet it is impractical to cable it in so Wireless is a good option the access
point is like a switch without cables more than one device can connect to the
access point over time but without the messy cabling the access point can also
be connected to the switch with a cable this way wired and wireless devices can
all be part of the same network having both wired switches and wires access
points gives you more connection options imagine you have a laptop in an office
you may connect it to the network with a cable when you’re at your desk when you
have a meeting in the conference room you remove the cable and connect to
Wi-Fi where the wired or wireless the goal of the network is to move
information from one device to another for this to work the sender and the
receiver must understand each other they need to speak the same language in the
network speaking the same language means that devices agree on how data is sent
received organized and handled basically they agree on a process that they all
follow it’s a bit like filling out paperwork this is called a protocol a
lot of different protocols are used depending on what’s needed at the time
network software and hardware are designed with these protocols in mind
you will hear of protocols like Ethernet and TCP which are used for sending and
receiving data you may also hear of protocols like HTTP which is used for
accessing the web and SMTP which is used for email usually several protocols are
used together to achieve a task we look at protocols further in future videos in summary networks are used to connect
devices together devices use the network to communicate and to share information
to share information devices need to speak the same language this language is
called a protocol which is a set of instructions of how to handle the
information we’re going to start with some simple
questions to get the brain working firstly what are the two ways computers
can connect to the network to follow on from that what devices do they usually
connect to and finally how many protocols are used when one computer
accesses another computer when you’re ready to see the answers follow the link
at the bottom of the screen that works connect devices you could call devices
on the network nodes nodes may include devices that help control the traffic
flowing through a network like switches and routers nodes also include end
points or hosts these are devices that send and receive the bulk of the traffic
this includes workstations servers printers and so on now works come in
different sizes a network at home is an example of a small network these
networks usually only have a few nodes this is called a Soho Network Soho means
small office home office these networks typically have a couple of computers a
printer a few phones and tablets some devices will be wireless and some are
connected to a switch this might be a good time to mention that people often
say hub when they mean switch you can see why of course as the switch looks
like a central hub in a Soho Network but please keep in mind that switches and
hubs are very different things hubs are really old technology that you
generally don’t see anymore outside of a museum while switches are modern and
commonly used they look very similar so it’s easy to mix them up have a look at
the model number to see if it gives you any clues about what the device really
is in a Soho Network a router is used to connect to the internet you might find
that the router switch access point are all integrated into one
device also her network will only have a few
devices a corporation for example the bank will have many devices this is
called an enterprise network the enterprise network may cover several
floors in a building there may also have several office buildings in different
cities or even across different countries an internet provider has a
very large network this is called a service provider network not only do
they provide Internet access they also offer services to connect
their customers together consider the bank with offices all around the country
the service provider uses part of their network to join these officers together
when devices are collected into a local area we call this a local area network
or LAN the land may be a small network in a Soho Network the LAN is the switch
with the handful of devices connected or the land may be part of a bigger network
like an enterprise network this network may have many switches routers and
access points depending on their needs think of the bank from before they have
an office with several floors you could consider the whole building as a LAN or
more likely the network is broken up into smaller parts perhaps there is a
separate network on each floor each of these could also be called the LAN these
separate LANs may be connected together but we’ll talk more about that later but
a banks network is going to be larger than just one building banks have
offices all over the country and all over the world even though they are far
apart these networks can be joined together this is called a win or wide
area network imagine for a moment that you work for a company with an office in
Sydney and an office in Melbourne you could contact a service provider and
they can connect these officers for you where’s there a topic all of their own
so we’ll cover them in detail in a later video let’s take a moment for a quick summary
all networks are different and this includes their size a Soho Network is
very small while an enterprise network may be very
large of course your network could fit in anywhere in between a LAN or local
area network is a collection of network devices in a local area like a single
building a when or wide area network connects networks that are far apart and
once again it’s time to get the brain working here’s something to think about
you work for a company that has a finance division an engineering division
and an admin division each group have their own network and the networks are
joined together is this network still a LAN or is it something else entirely the
company grows and adds a retail division in addition to the head office there is
now six branch offices what type of network is this as before go to the link
below to see the answers I hope you’ve enjoyed part one of this
series join me in part two where we’ll have a look at different types of
cabling the Ethernet protocol and a bit of an introduction into network
addressing if you found this helpful subscribe and click the notification
button also if you liked it please click the like button and tell me what you
thought in the comments

Author: Kevin Mason

100 thoughts on “Introduction to Networking | Network Fundamentals Part 1

  1. The quiz page can be found at:
    https://networkdirection.net/labsandquizzes/quizzes/introduction-to-networking-quiz/
    The CCENT/CCNA study guide (affiliate):
    https://click.linksynergy.com/link?id=RL4E*8CmbSY&offerid=145238.2445867&type=2&murl=http%3A%2F%2Fwww.ciscopress.com%2Ftitle%2F9781587205804

  2. Very well explained. Will take this course to the very end. Thank you for the effort put into making this a simple as possible.

  3. This is a great video! Love the quiz after a section. Love the link to the Network Direction site. This is so incredible for a free tool! Your tone is great, your pace is great. And the making the audience use their own brain to engage in the topic instead of just the usual consuming of a video. Keeps the interaction with the information. I loved this and videos like this are why YouTube is known for free education. If you want to learn, you don't need thousands of dollars anymore. This is bringing all knowledge, wisdom, and learning to anyone who wants it. Thank you so much!

  4. I’m fairly new to networking and I’ve been searching a lot for good training videos. I have found several great resources but yours are my favorite that I’ve found. Thank you.

  5. Who would I talk to if my ps4 cannot connect to my Verizon Router via lan and WiFi; But works fine any other place that I go when I use the lane and when I connect to WiFi.

  6. Heads up. Nobody wants to follow the link at the bottom of the screen. Just ask us to pause the video while we think about the answer and then give us the answers immediately in the video. Much easier.

  7. Im about to start technical college for network system support and earn net+, ccna routing and switching, ccna security, amungst others. This channel is perfect! Thank you for making this content. Time to take notes!!!

  8. For some one who just try to learn in his own past. It's God's gift video. I'm new subscribed my goal is CCNA InshaAllah(Gog willing). Thank you!

  9. This is very well done. I am attempting to expand my knowledge of Networking and computer security in order to setup and secure my own servers. This is giving me the foundation I need to be able to do this. I am pleased that the language you are using is simple and straight forward. You do an excellent job of defining the meaning of specialized terms like LAN and WAN. I look forward to working through the rest of this course. Thank you for all your effort and time in putting together and excellent instructional video.

  10. I'm currently in a networking class in college. Your videos are helping me better understand what's being taught.

  11. Great video. I like the pace of your speech. It is not too slow it is not too fast. The pronunciation is also very good.

    The information is also very well presented . It has the right amount of hi and low tech lingo so even a beginner is not going to get lost and give up

    Great Job

  12. When i was studied in university, my teachers never teaches like you, i'm very glad to find your channel πŸ‘ your notes are very important

  13. That's an awesome video. It is so informative. I'm actually in college and I wish my professor did half the job that you've done in this video in clarifying and laying the ground work for the subject matter. Thank you so much for laying the foundation first before delving into the intricate matters of the subject!!!!!

  14. This video is better than the book they gave me for the class I am taking on this. In fact, it is one of the best videos on this topic. Thank you!

  15. networking is basically the postal service of the internet, is this an apt description i feel happy with it but it feels a little redundant as if saying " a network is a network"

  16. good video but don't like having to type in another link just to check answers to the quiz.. that's so disruptive to the whole experience.

  17. You are absolutely amazing at explaining this. Keep it up and thank you so much for doing this! I recently started a systems engineering course and I have been feeling lost. This has given me the confidence to know that I am not hopeless, things just need to explained clearly, like you have done πŸ™‚

  18. Trying to gain more exposure. Wasted my time a bit starting with part 1, BUT great breakdown for people just jumping in. A little ad heavy, minor irk, but fair trade for a free video

  19. thank you! my prof makes this so much harder to understand but you make it way easier! thank you again and can't wait to watch the whole series. subscribed πŸ™‚

  20. Great introduction. I had heard a lot of the terms used but had no idea what any of them meant. It was good it was broken down in an easy to understand format

  21. Very well done! If I could just suggest something I would say to pick up the pace a bit in future videos. People can still pause it if they find it too fast πŸ™‚

  22. Started working on a new Associates Degree in programming. The first class that I have to take is Intro to Networking. I thought I'd find videos to add to my textbook.

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