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Cambridge IGCSE Computer Science practice

Paper 1 structured question: The internet and the world wide web

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Attempt questionThe internet and the world wide web revisionRevise the key idea

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4

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Topic

The internet and the world wide web

Exam-style question

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Paper 1Computer Systems4 marks

Understanding the web page retrieval process is essential for computer science.

Description

Web Page Retrieval Process

When a user enters a URL, the browser checks its cache, contacts the DNS for the IP address, sends a request to the web server, and receives HTML to render the page.

  1. a

    Outline the steps involved in retrieving a web page after a URL is entered.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 1 structured question: The internet and the world wide web

Paper 1Computer Systems2 marks

Description

Web Page Retrieval Process

When a user enters a URL, the browser checks its cache, contacts the DNS for the IP address, sends a request to the web server, and receives HTML to render the page.

  1. a

    Explain the role of the DNS in the web page retrieval process.

    Aim for approximately 2 distinct marking points.

    [2]