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    AQA A-Level Computer Science

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    Course 601/4569/9
    Course version · 601/4569/9Version from Sept 2015Change version

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    Assessment and exam guidance

    What Gets Top Grades

    A*/Grade 9

    Knowledge & Understanding

    Demonstrates comprehensive and accurate knowledge

    • Uses correct subject-specific terminology
    • Shows detailed understanding of concepts
    • Makes accurate connections between topics
    • Demonstrates depth beyond surface-level knowledge

    Application

    Applies knowledge effectively to new contexts

    • Selects relevant knowledge for the question
    • Adapts understanding to unfamiliar scenarios
    • Uses examples appropriately
    • Shows awareness of context

    Analysis & Evaluation

    Develops sophisticated analytical arguments

    • Constructs logical chains of reasoning
    • Considers multiple perspectives
    • Weighs evidence to reach justified conclusions
    • Acknowledges limitations and nuances

    Key Command Words

    AQA
    State
    1 mark

    Give a single fact or term

    Identify
    1 mark

    Name, select, or recognise

    Outline
    2 marks

    Set out main features briefly

    Describe
    2-4 marks

    Give an account of what something is like or what happens

    Explain
    3-6 marks

    Give reasons with developed cause→effect chains

    Compare
    2-4 marks

    State similarities AND differences (both required)

    Analyse
    6-9 marks

    Examine in detail showing cause→effect→consequence chains

    Evaluate
    6-12 marks

    Weigh up BOTH sides, reach JUSTIFIED conclusion

    Assess
    6-12 marks

    Make judgments about importance with justification

    Calculate
    2-4 marks

    Show formula→substitution→calculation→answer with units

    Tips and common mistakes

    Common Exam Mistakes

    Pitfalls to avoid in your exams

    • •Confusing Hadoop with Spark.
    • •Not understanding the map and reduce phases.
    • •Ignoring fault tolerance mechanisms.
    • •Confusing privacy with data security; focusing solely on hacking rather than legal and ethical data handling.
    • •Failing to differentiate between government surveillance and corporate data collection, treating them as identical.
    • •Presenting a one-sided argument on censorship without considering the complexities of content moderation.
    • •Overlooking the global nature of the internet and the jurisdictional challenges in enforcing privacy laws.
    • •Confusing predictive and prescriptive analytics: predictive forecasts future events, while prescriptive recommends specific actions to influence those events.

    Top Examiner Tips

    Expert advice for exam success

    • •Use diagrams to explain MapReduce flow.
    • •Highlight Spark's in-memory processing advantage.
    • •Give real-world examples like log analysis.
    • •Include specific, named case studies to ground your arguments (e.g., Edward Snowden, Cambridge Analytica, China's firewall).
    • •Structure your response clearly: start with definitions, then present arguments for and against, and conclude with a reasoned judgment.
    • •Use terminology accurately: distinguish between 'privacy', 'anonymity', 'confidentiality', and 'security'.
    • •When discussing legislation, mention its specific principles (e.g., GDPR's right to be forgotten).
    • •Structure responses by clearly addressing each analytics type with a definition, key question, techniques, and a concrete example.

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