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Computer Science · May / June 2024 · Paper 12 · Question 8

0478

As printed in the paper

The question as text

A company has a website that is suffering a distributed denial of service (DDoS) attack.

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

  • 8(a)[5]

    One mark for each part of the diagram that shows:

    A perpetrator/third party sending malware // user downloads/installs malware
    Each computer is turned into a bot…
    … to create a botnet
    Third party initiates the attack
    All the bots send a request at once to a web server
    … crashing the webserver

    Example:

    Botnet

    bot

    bot

    third

    web

    party

    Requests

    server

    bot

    Third party

    sends

    Web server

    malware.

    bot

    cannot handle

    all the requests

    and crashes.

    Malware turns

    computers

    into bots.

  • 8(b)[1]

    Proxy server

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