1 00:00:07,440 --> 00:00:08,550 In this video. 2 00:00:08,550 --> 00:00:13,480 Let's talk about how the Internet works technically. 3 00:00:14,310 --> 00:00:20,070 You technically here simply means that we are going to talk about some of the technical terms. 4 00:00:20,400 --> 00:00:21,780 So let's get started. 5 00:00:21,810 --> 00:00:27,450 Well, so what is the importance of this when starting to learn web development? 6 00:00:27,720 --> 00:00:31,550 It's understanding the Internet really crucial or important. 7 00:00:31,560 --> 00:00:39,870 Well, understanding how the Internet works is a crucial aspect of web development. 8 00:00:40,260 --> 00:00:50,040 The Internet is a network of networks that connects millions of computers and devices around the world. 9 00:00:50,220 --> 00:00:58,350 It allows users to share information, communicate and access various types of content, such as websites, 10 00:00:58,650 --> 00:01:01,470 videos and document. 11 00:01:01,980 --> 00:01:11,970 The backbone of the Internet is made up of a network of high speed cables and routers that connect the 12 00:01:11,970 --> 00:01:13,620 different network together. 13 00:01:13,890 --> 00:01:24,000 And these cables and routers are controlled by Internet services provider, and that is ISPs who provide 14 00:01:24,000 --> 00:01:31,590 the infrastructure and the connectivity that enables users to access the Internet. 15 00:01:31,890 --> 00:01:34,140 Let me show you how it works. 16 00:01:34,350 --> 00:01:41,200 Let's say that this is a user who is trying to access a specific website. 17 00:01:41,220 --> 00:01:46,750 In this way, this user is trying to watch videos from YouTube. 18 00:01:46,770 --> 00:01:48,630 So let's see how it's going to work. 19 00:01:48,870 --> 00:01:56,640 When it comes to web development, we refer what the user is using to access the Internet as the client. 20 00:01:56,790 --> 00:02:04,980 So the client here is not the user, but instead the browser being installed on the user computer. 21 00:02:05,220 --> 00:02:07,140 That is what the server knows. 22 00:02:07,290 --> 00:02:07,680 All right. 23 00:02:07,680 --> 00:02:11,039 So this what we call the client. 24 00:02:11,280 --> 00:02:14,280 Then let's look at the servers around. 25 00:02:14,460 --> 00:02:23,280 We can have a server for TikTok and G plus YouTube, Facebook and Instagram. 26 00:02:23,920 --> 00:02:27,010 So let's see the process involved. 27 00:02:27,430 --> 00:02:36,370 When a user wants to access any of these servers first, the user will enter the URL into his or her 28 00:02:36,370 --> 00:02:37,120 browser. 29 00:02:38,180 --> 00:02:46,160 Then the browser will send a request to a server where the website is hosted. 30 00:02:46,520 --> 00:02:54,020 So in this case, when a user enters, YouTube.com is going to look through all the servers. 31 00:02:54,690 --> 00:02:59,610 That matches the URL, the user pass in into the browser. 32 00:03:00,060 --> 00:03:02,780 So at this point is being such an. 33 00:03:03,450 --> 00:03:12,180 Then the request is sent through the internet hoping from router to router until it reaches the server. 34 00:03:12,390 --> 00:03:17,940 So let's say that it has found the server, which is the YouTube. 35 00:03:18,940 --> 00:03:26,500 Then when the server receives the request, in this case YouTube server, then the server sent back 36 00:03:26,500 --> 00:03:34,120 the necessary information such as the HTML, CSS and JavaScript file that makes up the website. 37 00:03:34,240 --> 00:03:38,800 In this case there is a video that the user wants to watch. 38 00:03:38,800 --> 00:03:46,540 So at this point, the process of sending requests to the server is what you call the request, and 39 00:03:46,540 --> 00:03:54,040 the process of sending back the information after making the request is what you call the response. 40 00:03:54,130 --> 00:04:01,210 So at this point, you know, two technical terms when it comes to web development, that is request 41 00:04:01,210 --> 00:04:02,830 and response. 42 00:04:02,950 --> 00:04:06,970 And two more is the client and the server. 43 00:04:07,480 --> 00:04:17,170 So the Internet also uses a system called DNS, meaning domain name system to translate human readable 44 00:04:17,170 --> 00:04:22,870 website address into IP addresses that a computer can understand. 45 00:04:22,960 --> 00:04:29,970 And this allows users to type in an easy to remember website address instead of the servers IP addresses. 46 00:04:29,980 --> 00:04:38,110 So in addition, the Internet uses what is called a HTTP, and that is hypertext transfer protocol to 47 00:04:38,110 --> 00:04:43,630 send and receive information between the web browser and then the server. 48 00:04:44,400 --> 00:04:53,370 And it also uses what is called HTTPS, meaning secure Hypertext transfer protocol to encrypt the data 49 00:04:53,370 --> 00:04:54,960 to keep it secured. 50 00:04:55,170 --> 00:05:04,140 So, guys, in conclusion, understanding how the Internet works is an essential part of web development 51 00:05:04,350 --> 00:05:11,250 as it helps developers understand how their web application and website is going to interact with the 52 00:05:11,250 --> 00:05:17,400 global Internet and how it can be improved to create better user experience. 53 00:05:17,520 --> 00:05:25,020 Well, if the flow is not clear to you in the next video, you explain how the Internet works in layman's 54 00:05:25,020 --> 00:05:26,040 understanding. 55 00:05:26,070 --> 00:05:27,890 Let's continue in the next video, guys.