In the previous video, we already learn about what is computer network. 2
The point is, that computer network is connection between two or more computer 3
that can share information each others. Pay attention to my sentences, I say 4
two or more computers. This is means that we can build computer network with only two computers. 5
For example, here we have two computers that connected using cable. 6
In the computer network, the cable that we usually use 7
is UTP cable. So this is UTP cable that we use to connecting these two computers. 8
If you never see UTP cable yet, here is the example. This blue cable is UTP cable. 9
And in the end of each cable, we will have RJ45 like this. So we have RJ45 here, 10
and in the another end, we also have RJ45. This is small, but we can see here that we have RJ45. 11
This RJ45 will be connected to LAN port in the computer 12
If you see on your computer or laptop, you may be have a LAN port like this. 13
So in the PC 1 will be connected to LAN port and in the PC 2 also will be connected to the LAN port. 14
Now PC 1 and PC 2 already connected using UTP cable, 15
this is mean that we already have computer network between these two PC. So now, PC 1 and PC 2 can 16
share information each others like I show you in the previous video. Now, if we want to share data 17
between these two PC, we don’t need flashdisk anymore, but we can use computer network! 18
May be some of you have a question, the newest laptops now usually don’t have LAN port like this anymore, 19
how we can connect this laptop which don’t have LAN port to the computer network? 20
If the laptop or computer don’t have LAN port, we can use USB to LAN converter like this. 21
The USB will be connected to our laptop, 22
and the LAN port will be connected to UTP cable. 23
This is how we can connecting our laptop which don’t have LAN port to the computer network. 24
Or we also can use wireless to connecting our laptop to the computer network. 25
I think all of laptop must be have a wireless adapter on it, 26
so we can use it to connecting the laptop to the computer network. 27
The simplest example of computer network that built using wireless 28
is when you use bluetooth to connecting two smartphones. 29
For example here we have smartphone 1, and we want to share photo to the smartphone 2, 30
So we can connecting these two smartphones using bluetooth, after that we can share 31
photo from smartphone 1 to smartphone 2. This is also the example of computer network. 32
Until now, we understand that to build a computer network, we can use wired or wireless. 33
If we use wired, we will need UTP Cable, RJ45, and LAN port, and if we use wireless, 34
we just need to have a wireless adapter on the laptop. 35
Okay I think enough for this video. In the next video, we are going to learn about IP Address. 36
Thank you for watching and see you on the next video!