[Udemy] Webdevelopment_how the Internet Works

Browsing the web

Enter Google.com, who's this google.com

This question gets asked all the the the the same as the the the the same as the Internet Service Provider. ve Internet.

ISP get the request and send them to DNS (Domain Name server) server, it's like a phone book.

It has the list of all these URLs like google.com and have the address of them

DNS send off the request back through ISP

Web browser like Google Chrome in the case gets 172.217.7.23

We recevie IP address

Anything that's connected to the Internet have it own address (each laptop work now have IP address)

This Ip address allows the Internet to work

Once we know the IP address, the browser sends off another request to Google Server

Google Server say, oh np let me give you my HTML, CSS, JS

Then HTML, CSS, JS would is sent to the browser

Then browser would show the formal Google page

For the above three steps,

If we can skip the first step

Send the IP address directly to Google Server in the second step?

You can also get the third step of formal Google page

Breaking Google

Develper Tools via View-Developer

That's how the interface changes.

At the top left, click on the logo with Poniter

Can see the various modules of the Web page, you can change the module

It's like we changed the HTML, CSS, JS file that Google server had previously passed.

Once we reques Google Server again,

Then the interface will revert to the HTML, CSS, and JS files from Google Server as shown (e.g.)

The Internet Backbone

We have Wifi from router

Router is connected-to-modem (If you are an up-to-the-Internet, you are someone come to your house and install it

The modem has the signal towers that transmit signals

is connected all the the-to-the-ISP

IPS is connected to Internet backbone

All the files would go through this submarine cable (physical cable goes the bottom of see floor)

Traceroute

You can find out how many stop traceroute from your home router to Google server in the middle of a trip.

Developer Fundamental

How to make websites load faster?

Location of the server as close as possible

How many trips is as small as possible.

Size of files The smaller the better

What does a developer do?

[Udemy] Webdevelopment_how the Internet Works