Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,510 --> 00:00:02,130 Hellooo! Welcome back. 2 00:00:02,400 --> 00:00:06,630 We mentioned in the last lesson that we're going to be talking about traceroute. What is that? 3 00:00:06,720 --> 00:00:12,469 Well I just wanted to finally, get the entire picture of the Internet across and I think this 4 00:00:12,470 --> 00:00:14,090 is the best way to do it. 5 00:00:14,130 --> 00:00:20,879 Now if you're on a Mac you're going to press CMD Space and look for a program that comes with your 6 00:00:20,880 --> 00:00:25,730 Mac called terminal and you're going to press Enter and you're going to get this. 7 00:00:25,740 --> 00:00:28,520 So it's an application that all Macs have. 8 00:00:28,620 --> 00:00:33,810 If you're on a Windows machine it's called Command Prompt and in the exercise right after this lesson 9 00:00:34,110 --> 00:00:37,700 I will show you instructions on how to access that as well. 10 00:00:37,890 --> 00:00:46,609 We're going to talk about traceroute, and if you remember we spoke about this image of all these connected 11 00:00:46,610 --> 00:00:53,510 things happening and going to the Internet backbone and then Google.com finally sends us the files 12 00:00:53,540 --> 00:00:58,239 back to our house and you can actually monitor how that's going to work on here using traceroute. 13 00:00:58,320 --> 00:01:04,670 So if we type in traceroute and on Windows machine, it's actually 'tracert'. 14 00:01:04,760 --> 00:01:11,569 But for now we'll just go traceroute and you can request for whatever website you want. 15 00:01:11,570 --> 00:01:13,060 So let's go with Google.com. 16 00:01:13,110 --> 00:01:16,440 I press Enter and yep, look at that. 17 00:01:16,470 --> 00:01:20,930 It gave me a whole bunch of hops that it did. 18 00:01:20,970 --> 00:01:29,540 So you can see 1 through 9 here so did 9 hopps, so that means 9 stops to this address 19 00:01:31,300 --> 00:01:35,249 at 172.217.1.14 20 00:01:35,250 --> 00:01:37,859 So again, that looks like the IP address. 21 00:01:37,860 --> 00:01:41,579 So again let's always test our experiments here. 22 00:01:41,580 --> 00:01:48,320 If I put that in and press Enter, we should get Google.com. let's see. Look at that; google.com! 23 00:01:48,410 --> 00:01:53,510 So that's a fun little way of you to see where your requests go. 24 00:01:53,540 --> 00:02:00,380 And you can monitor, you can see all these IP addresses are different computers, that are trying to locate 25 00:02:00,680 --> 00:02:02,000 the Google servers. 26 00:02:02,060 --> 00:02:07,170 So go ahead in the next section there's a little exercise you can play around with this and 27 00:02:07,200 --> 00:02:10,210 just see where all your requests go all over the world. 28 00:02:10,290 --> 00:02:11,550 I think it's very very cool. 29 00:02:11,630 --> 00:02:17,439 We're going to finish up in the next section with some fundamentals and what we can do with this knowledge 30 00:02:17,440 --> 00:02:21,300 that we have, to actually become really good web developers. 31 00:02:21,330 --> 00:02:23,220 So see in the next section. Bye-bye. 3381