O-LevelComputer ScienceThe Internet and its uses2210/12 · May/June 2024 · Q86 Marks
A company has a website that is suffering a distributed denial of service (DDoS) attack.
- (a)Draw and annotate a diagram to show the process of the DDoS.[5]
- (b)Identify a solution that can be used to help prevent the DDoS attack being successful.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2024). The mark or mark type is shown in brackets.
- [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: [Diagram in Mark Scheme shows: Third party sends malware -> bot (multiple) -> botnet. Third party initiates attack -> Requests (from bots) -> web server. Web server cannot handle all requests and crashes.]
- [1] Proxy server
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