1 00:00:00,046 --> 00:00:04,795 In the previous video, we already learn about what is computer network. 2 00:00:05,595 --> 00:00:10,901 The point is, that computer network is connection between two or more computer 3 00:00:10,901 --> 00:00:17,920 that can share information each others. Pay attention to my sentences, I say 4 00:00:17,920 --> 00:00:25,595 two or more computers. This is means that we can build computer network with only two computers. 5 00:00:25,893 --> 00:00:31,499 For example, here we have two computers that connected using cable. 6 00:00:32,251 --> 00:00:36,000 In the computer network, the cable that we usually use 7 00:00:36,000 --> 00:00:43,375 is UTP cable. So this is UTP cable that we use to connecting these two computers. 8 00:00:44,080 --> 00:00:51,537 If you never see UTP cable yet, here is the example. This blue cable is UTP cable. 9 00:00:52,282 --> 00:01:00,987 And in the end of each cable, we will have RJ45 like this. So we have RJ45 here, 10 00:01:01,125 --> 00:01:10,139 and in the another end, we also have RJ45. This is small, but we can see here that we have RJ45. 11 00:01:10,704 --> 00:01:15,195 This RJ45 will be connected to LAN port in the computer 12 00:01:15,840 --> 00:01:21,072 If you see on your computer or laptop, you may be have a LAN port like this. 13 00:01:22,032 --> 00:01:28,939 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 00:01:29,525 --> 00:01:33,824 Now PC 1 and PC 2 already connected using UTP cable, 15 00:01:34,560 --> 00:01:42,400 this is mean that we already have computer network between these two PC. So now, PC 1 and PC 2 can 16 00:01:42,400 --> 00:01:49,451 share information each others like I show you in the previous video. Now, if we want to share data 17 00:01:49,451 --> 00:01:55,403 between these two PC, we don’t need flashdisk anymore, but we can use computer network! 18 00:01:57,344 --> 00:02:05,089 May be some of you have a question, the newest laptops now usually don’t have LAN port like this anymore, 19 00:02:06,000 --> 00:02:11,460 how we can connect this laptop which don’t have LAN port to the computer network? 20 00:02:12,079 --> 00:02:18,704 If the laptop or computer don’t have LAN port, we can use USB to LAN converter like this. 21 00:02:20,363 --> 00:02:23,438 The USB will be connected to our laptop, 22 00:02:25,498 --> 00:02:29,131 and the LAN port will be connected to UTP cable. 23 00:02:29,280 --> 00:02:35,258 This is how we can connecting our laptop which don’t have LAN port to the computer network. 24 00:02:35,771 --> 00:02:40,470 Or we also can use wireless to connecting our laptop to the computer network. 25 00:02:41,040 --> 00:02:45,291 I think all of laptop must be have a wireless adapter on it, 26 00:02:45,573 --> 00:02:49,691 so we can use it to connecting the laptop to the computer network. 27 00:02:50,507 --> 00:02:55,072 The simplest example of computer network that built using wireless 28 00:02:55,072 --> 00:02:59,067 is when you use bluetooth to connecting two smartphones. 29 00:02:59,440 --> 00:03:05,761 For example here we have smartphone 1, and we want to share photo to the smartphone 2, 30 00:03:07,472 --> 00:03:14,400 So we can connecting these two smartphones using bluetooth, after that we can share 31 00:03:14,400 --> 00:03:20,819 photo from smartphone 1 to smartphone 2. This is also the example of computer network. 32 00:03:21,267 --> 00:03:27,775 Until now, we understand that to build a computer network, we can use wired or wireless. 33 00:03:32,480 --> 00:03:40,245 If we use wired, we will need UTP Cable, RJ45, and LAN port, and if we use wireless, 34 00:03:40,245 --> 00:03:43,579 we just need to have a wireless adapter on the laptop. 35 00:03:44,400 --> 00:03:51,360 Okay I think enough for this video. In the next video, we are going to learn about IP Address. 36 00:03:51,573 --> 00:03:54,884 Thank you for watching and see you on the next video!