Original subtitles

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Hellooo! Welcome back.

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We mentioned in the last lesson that we're going to be talking about traceroute. What is that?

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Well I just wanted to finally, get the entire picture of the Internet across and I think this

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is the best way to do it.

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Now if you're on a Mac you're going to press CMD Space and look for a program that comes with your

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Mac called terminal and you're going to press Enter and you're going to get this.

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So it's an application that all Macs have.

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If you're on a Windows machine it's called Command Prompt and in the exercise right after this lesson

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I will show you instructions on how to access that as well.

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We're going to talk about traceroute, and if you remember we spoke about this image of all these connected

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things happening and going to the Internet backbone and then Google.com finally sends us the files

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back to our house and you can actually monitor how that's going to work on here using traceroute.

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So if we type in traceroute and on Windows machine, it's actually 'tracert'.

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But for now we'll just go traceroute and you can request for whatever website you want.

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So let's go with Google.com.

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I press Enter and yep, look at that.

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It gave me a whole bunch of hops that it did.

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So you can see 1 through 9 here so did 9 hopps, so that means 9 stops to this address

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at 172.217.1.14

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So again, that looks like the IP address.

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So again let's always test our experiments here.

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If I put that in and press Enter, we should get Google.com. let's see. Look at that; google.com!

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So that's a fun little way of you to see where your requests go.

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And you can monitor, you can see all these IP addresses are different computers, that are trying to locate

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the Google servers.

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So go ahead in the next section there's a little exercise you can play around with this and

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just see where all your requests go all over the world.

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I think it's very very cool.

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We're going to finish up in the next section with some fundamentals and what we can do with this knowledge

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that we have, to actually become really good web developers.

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So see in the next section. Bye-bye.