All language subtitles for 4. The Internet Backbone

af Afrikaans
ak Akan
sq Albanian
am Amharic
ar Arabic
hy Armenian
az Azerbaijani
eu Basque
be Belarusian
bem Bemba
bn Bengali
bh Bihari
bs Bosnian
br Breton
bg Bulgarian
km Cambodian
ca Catalan
chr Cherokee
ny Chichewa
zh-CN Chinese (Simplified)
zh-TW Chinese (Traditional)
co Corsican
hr Croatian
cs Czech
da Danish
nl Dutch
en English
eo Esperanto
et Estonian
ee Ewe
fo Faroese
tl Filipino
fi Finnish
fr French
fy Frisian
gaa Ga
gl Galician
ka Georgian
de German
el Greek
gn Guarani
gu Gujarati
ht Haitian Creole
ha Hausa
haw Hawaiian
iw Hebrew
hi Hindi
hu Hungarian
is Icelandic
ig Igbo
id Indonesian
ia Interlingua
ga Irish
it Italian
ja Japanese
jw Javanese
kn Kannada
kk Kazakh
rw Kinyarwanda
rn Kirundi
kg Kongo
ko Korean
kri Krio (Sierra Leone)
ku Kurdish
ckb Kurdish (Soranî)
ky Kyrgyz
lo Laothian
la Latin
lv Latvian
ln Lingala
lt Lithuanian
loz Lozi
lg Luganda
ach Luo
mk Macedonian
mg Malagasy
ms Malay
ml Malayalam
mt Maltese
mi Maori
mr Marathi
mfe Mauritian Creole
mo Moldavian
mn Mongolian
sr-ME Montenegrin
ne Nepali
pcm Nigerian Pidgin
nso Northern Sotho
no Norwegian
nn Norwegian (Nynorsk)
oc Occitan
or Oriya
om Oromo
ps Pashto
fa Persian
pl Polish
pt-BR Portuguese (Brazil)
pt-PT Portuguese (Portugal)
pa Punjabi
qu Quechua
ro Romanian
rm Romansh
nyn Runyakitara
ru Russian
gd Scots Gaelic
sr Serbian
sh Serbo-Croatian
st Sesotho
tn Setswana
crs Seychellois Creole
sn Shona
sd Sindhi
si Sinhalese
sk Slovak
sl Slovenian
so Somali
es Spanish
es-419 Spanish (Latin American)
su Sundanese
sw Swahili
sv Swedish
tg Tajik
ta Tamil
tt Tatar
te Telugu
th Thai
ti Tigrinya
to Tonga
lua Tshiluba
tum Tumbuka
tr Turkish
tk Turkmen
tw Twi
ug Uighur
uk Ukrainian
ur Urdu
uz Uzbek
vi Vietnamese Download
cy Welsh
wo Wolof
xh Xhosa
yi Yiddish
yo Yoruba
zu Zulu
Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,670 --> 00:00:02,229 Hey they're welcome back. 2 00:00:02,230 --> 00:00:06,040 All right if you thought so far everything's been really really cool. 3 00:00:06,070 --> 00:00:09,200 Well, things are gonna get a lot cooler. 4 00:00:09,250 --> 00:00:11,859 We're going to be talking about the Internet backbone. 5 00:00:11,860 --> 00:00:16,340 So we recognize this because I've been talking about it for the last couple of lessons. 6 00:00:16,430 --> 00:00:22,039 But some of you may have had a question that is what do the arrows mean. 7 00:00:22,040 --> 00:00:23,689 I mean it's kind of like magic right. 8 00:00:23,690 --> 00:00:30,590 I just told you that we send off the IP address to the servers the server responds with some files but 9 00:00:31,520 --> 00:00:36,660 this is just magic like what do these arrows mean? So, we're going to talk about that in this lesson. 10 00:00:36,860 --> 00:00:43,259 And we're going to do that with this really, really fuzzy diagram that I found online from this website. 11 00:00:43,280 --> 00:00:48,029 It's not the clearest picture but it actually has some really important things so I want to use that 12 00:00:48,030 --> 00:00:51,200 to demonstrate to you what the Internet backbone is. 13 00:00:51,240 --> 00:00:59,290 So, as some of you know the way we connect in our homes, at a coffee shop, or at work is we usually have 14 00:00:59,330 --> 00:01:04,209 Wi-Fi or you know maybe sometimes we still have people they are using Ethernet cables 15 00:01:04,210 --> 00:01:05,160 and connecting through those. 16 00:01:05,161 --> 00:01:11,939 But for now let's just focus on the fact that we have a home and we have Wi-Fi and this Wi-Fi essentially 17 00:01:11,940 --> 00:01:13,550 gives us Internet from the router. 18 00:01:13,560 --> 00:01:20,640 You can see this little person over here working hard with a router next to him and this router is connected 19 00:01:21,990 --> 00:01:24,250 all the way to something called a modem. 20 00:01:24,330 --> 00:01:29,779 And this is something that if you ever sign up for Internet or change providers you most likely had 21 00:01:29,780 --> 00:01:32,970 somebody come to your house and install something. 22 00:01:33,120 --> 00:01:40,079 And that's this box over here that essentially allows the ISP the Internet 23 00:01:40,080 --> 00:01:42,160 Service Provider, this big building over here, 24 00:01:42,180 --> 00:01:45,000 we remember that, to connect to it. 25 00:01:45,090 --> 00:01:51,620 So this modem has the signal towers that transmit signals of, 26 00:01:51,630 --> 00:01:57,899 you know Google.com and it receives these messages and then this is why I picked this image just 27 00:01:57,900 --> 00:02:03,209 because I think it's incredible you see this wire that is connected all the way to the ISP and then 28 00:02:03,210 --> 00:02:10,460 the Internet Service Provider, the ISP is connected to this magical blue cable that is the Internet backbone 29 00:02:10,740 --> 00:02:17,429 and something that's really important in this image is the fact that there's Wi-Fi which is over the 30 00:02:17,430 --> 00:02:23,225 air but at the end of the day everything is kind of connected through cables. 31 00:02:23,230 --> 00:02:27,380 So some of you or many of you, or all of you might be wondering 32 00:02:27,404 --> 00:02:30,490 "What the hell is this Internet backbone thing?" 33 00:02:30,510 --> 00:02:36,290 Sounds cool. But this - this is kind of vague, so I found a really, really cool - cool thing that we can do together 34 00:02:36,300 --> 00:02:39,210 I'll post this website in the notes after this lesson. 35 00:02:39,270 --> 00:02:46,310 But if you go over here you actually see the Internet backbone. So, let's say we're in Brazil and we want 36 00:02:46,350 --> 00:02:47,690 to search Google.com. 37 00:02:47,950 --> 00:02:55,529 Well from Brazil, from our home, through Wi-Fi, it connects to our router, to our modem and then all the way 38 00:02:55,530 --> 00:03:01,290 to our Internet Service Provider lets say (the) Internet service provider is over here and then, through 39 00:03:01,320 --> 00:03:08,639 cables it connects all the way to, let's say this point over here, and let's say, for now that the Google 40 00:03:08,640 --> 00:03:11,690 servers are located somewhere in Portugal over here. 41 00:03:11,700 --> 00:03:18,799 Well that signal of me looking for that IP address of Google and looking for those Google files is going 42 00:03:18,800 --> 00:03:21,350 to go through this submarine cable. 43 00:03:21,450 --> 00:03:22,739 Yeah, you heard that right. 44 00:03:22,740 --> 00:03:30,929 It's a physical cable that goes at the bottom of the sea floor from Brazil all the way to Portugal where 45 00:03:30,930 --> 00:03:32,570 the Google servers are. 46 00:03:32,910 --> 00:03:38,080 And then the Google server says yep I got those files here there are and sends it all the way back. 47 00:03:39,300 --> 00:03:43,350 Through the ISP all the way back to our house. 48 00:03:43,380 --> 00:03:50,546 Isn't that cool that there's physical cables that are connecting, and creating the Internet so you know 49 00:03:50,550 --> 00:03:57,869 there are times where somebody destroys or something happens where these cable connections are cut off 50 00:03:57,870 --> 00:04:00,560 and you sometimes lose internet connection that way. 51 00:04:00,750 --> 00:04:08,760 But yeah the Internet backbone is literally just this network all over the world of connected cables 52 00:04:08,790 --> 00:04:12,190 so that we can transfer these files all over the world. 53 00:04:12,540 --> 00:04:19,110 And just to show you how insane this is somebody from the Opte Project over here - I got this off of Wikipedia, 54 00:04:19,350 --> 00:04:27,870 mapped out, and I believe this was in 2015, just 30 percent of the network, and you can see over here that 55 00:04:28,260 --> 00:04:32,240 each one of these dots is an IP address. 56 00:04:32,370 --> 00:04:36,769 So, a computer that is connected to another computer, that is connected to another computer. 57 00:04:36,900 --> 00:04:38,819 And that's the Internet. 58 00:04:38,820 --> 00:04:47,085 The Internet is just all these connected computers that are just transferring files between each other 59 00:04:47,210 --> 00:04:50,760 and as web developers and this is the coolest thing. 60 00:04:50,840 --> 00:04:56,089 And that's why I just think everybody should be a web developer because it's so cool. 61 00:04:56,090 --> 00:04:58,789 You're allowing this to happen. 62 00:04:58,790 --> 00:05:05,450 You're allowing this transferring of files from one computer to another, transferring knowledge from 63 00:05:05,690 --> 00:05:12,159 Brazil to Portugal and all over the world and you get to be part of it - you get to be part of this networking 64 00:05:12,160 --> 00:05:13,080 and get to evolve. 65 00:05:13,081 --> 00:05:17,939 When this picture of the Internet came to me I knew that this was the career for me. 66 00:05:17,940 --> 00:05:20,839 So, hopefully that gets you excited in the next session. 67 00:05:20,840 --> 00:05:22,049 I'm going to show you something really cool. 68 00:05:22,050 --> 00:05:28,490 Traceroute before we finish up the lesson and we get into the next sections so hope that was cool see 69 00:05:28,510 --> 00:05:29,510 in the next one. 8000

Can't find what you're looking for?
Get subtitles in any language from opensubtitles.com, and translate them here.