Basic Edition: Let’s Take a Look at Actual Data

Mechanism of Viewing Web Pages

In the simulator on the right side of the screen, you can experience the communication between a smartphone and a Web serverA computer where web page data is stored. when viewing a web page. The communication consists of a requestA request sent from a smartphone to a web server saying ’I want to see this page!’. from the smartphone and a responseThe data of the page returned from the web server to the smartphone. A reply. from the Web serverA computer where web page data is stored..

Illustration of communication with the Web server

Let’s display a web page. Copy and paste the URL http://example.jp/joho1/internet.html into the address barThe URL input field of a web browser. of the Web browserAn application for viewing web pages. displayed on the simulator’s smartphone, and press the Enter key. The web page will be displayed.

Screenshot of a web page displayed after entering the URL in the address bar

Access the URL above

If the operation is performed correctly, a checkmark will appear as shown above. Continue with the exercise, ensuring that checkmarks appear as you proceed.

HTTP

(Application LAyer)

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TCP

(Transport Layer)

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(Internet Layer)

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Ethernet

(Nework Interface Layer)

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Smartphone