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All right, let's talk about some network devices, first one we are going to see you have.

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So this connects computers and allows these computers for data transfer and for communication.

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And already there is one property for the hub.

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That is, if this computer wants to send one to send data to this computer, then it will transfer the

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data to this hub.

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And what this does is it will broadcast that message to every other computers.

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So it will send them that same, which is the message sent by this computer to this computer, to this

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computer and to this and to this, because it's the hub's property that that is the Hoppes job.

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And how we transfer since we can take these computers through a capabilities, but I like you can just

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support help contain some pots and you need to plug in the Ethernet cable to these ports.

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And if this computer one sends data to this computer, the hub transmits that message to every other

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computer, which is connected to the to the port.

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So this is very security issue, right.

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The because the message is being transmitted by password to every other computer to do so.

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So in general, organizations, these hubs are very rarely used and it's better not to use at all because

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if any other hacker with a laptop can connect the cable to the spot and can eavesdrop on the messages

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going on to this, going over these computers.

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So the improvement to the happy switch, it also allows the data transfer between our computers, but

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it is somewhat covert.

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And so we have learned about this computer and this computer have its own marketers and say these are

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devices, content, they're all Mercado's.

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Then if this computer wants to send a message to this computer first, it sends data to the switch.

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And this data contains the Mercado's.

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How this computer, then the switch does not know where to send.

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And this computer also don't know where to send this just since to this switch.

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And what switch does is at first time the switch transfers, transmits the message to all other devices

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and after transmitting to all of the devices, these devices respond to the switch, saying that this

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is not my Mac address and this my Macintosh is this one after sending.

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After getting response from all the devices, the switched notes, each and every device Mac address,

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and it was to be comfortable.

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I will be looking at this in the iReport video.

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So this which eventually learns Mac addresses of all devices connect to to the port.

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And then after getting all the Mac addresses from all the devices, then it will check the data for

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the Destination Mac address.

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And since this computer wants to send data to this computer and just it should send this data to this

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computer because their destination is this one right for you to access your help.

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And later on it learns the ah, the Mac addresses of the devices connect to it.

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So by this way, which is somewhat clever, then how?

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And the next one we need to see is Rotar, Rueter or Rotaru can as you wish.

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So what the what does this rotaries Rotar.

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And it was the wireless network.

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We are using the Wi-Fi in the phones.

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And one of the properties simulating that wireless network.

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And the most important job of a router is it connects different networks, so whenever we are sending

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a data to any other outside of our home network, then these router implement some routing items to

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find the best efficient path to reach the destination.

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So here is my daughter and my modem connected to the Internet.

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So this is another network.

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And if I want to send this data to another network, these rotors are compulsory and we have seen the

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switches.

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This we just were calling it Mercado's.

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And we cannot send the data only based on the backorders because there are so many factors out there.

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That's why this router improvements since that data to other devices based on IP addresses.

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And this Koetter also contains some BHB service, and it will assign the IP address to a particular

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device.

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So only two important things you need to know for first router include some wireless network and also

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it performs the routing algorithms and find the best and efficient, but further from further source

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to destination.

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And the next one is going to be the bridge, so bridge just connects two separate networks.

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So as you can see, there is a horse to be and have one and how to.

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And this bridge connects these two networks.

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So these bridges are used when there is some say Anakonda first building or an office.

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And if you want to connect to like seven different network to the network or to the telephone network,

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then you can just cannot simply run the cables over the roads.

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Right then in that case, bridges are very useful.

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So if you want to connect, if a member of 74 want to contact with the tenth floor, then you can just

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send a message through this bridge.

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These bridges are very helpful in connecting some different networks where the street and the last one

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were going to see is the repeater.

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So the reporter's job is to strengthen the signal.

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So I had the Wi-Fi and the way rain you saw was a few meters.

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And after that, fumigators, my signal gets lost or it weakens.

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Right.

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Then if I use distributer, this repeater strengthens that signal.

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And with this repeater, I can get away for some more distance.

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So this is use it when you want to access the network at speed and also at a long distance.