IB Diploma HL · International Baccalaureate

Computer Science DP

Computer Science DP revision notes for IB Diploma HL.

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Explore Computer Science

Explore 25 topic notes, learning objectives and practice.

2025 guide (first exams 2027)

SL/HL

CPU, GPU, primary memory and the fetch–decode–execute cycle6 learning objectives · 10 practice questions
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Secondary storage, compression and cloud computing4 learning objectives · 9 practice questions
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Data representation, logic gates and Boolean simplification6 learning objectives · 10 practice questions
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Operating systems, control systems and translation6 learning objectives · 10 practice questions
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SL/HL

Network fundamentals: types, digital infrastructure, devices and protocols5 learning objectives · 10 practice questions
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Network architecture, IP addressing and data transmission6 learning objectives · 12 practice questions
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Network security: firewalls, threats, countermeasures and encryption5 learning objectives · 12 practice questions
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SL/HL

Relational database design and normalization6 learning objectives · 12 practice questions
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Database programming with SQL6 learning objectives · 13 practice questions
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(HL) Alternative databases, data warehouses and distributed databases4 learning objectives · 12 practice questions
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SL/HL

Machine learning types, applications and hardware3 learning objectives · 9 practice questions
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(HL) Data preprocessing and supervised learning6 learning objectives · 13 practice questions
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(HL) Unsupervised, reinforcement and evolutionary learning, and neural networks6 learning objectives · 15 practice questions
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Ethics of machine learning and emerging technologies4 learning objectives · 10 practice questions
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SL/HL

Computational thinking, problem specification and flowcharts4 learning objectives · 11 practice questions
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SL/HL

Programming fundamentals: variables, data types, strings, exceptions and debugging4 learning objectives · 10 practice questions
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Data structures: arrays, lists, stacks and queues5 learning objectives · 11 practice questions
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Programming constructs: sequence, selection, loops and functions4 learning objectives · 11 practice questions
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Algorithms: Big O efficiency, searching, sorting and recursion5 learning objectives · 13 practice questions
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File processing4 learning objectives · 10 practice questions
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SL/HL

Object-oriented programming with a single class5 learning objectives · 8 practice questions
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(HL) Object-oriented programming with multiple classes5 learning objectives · 8 practice questions
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(HL) Abstract data types and linked lists4 learning objectives · 8 practice questions
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(HL) Binary search trees, sets and hash tables5 learning objectives · 9 practice questions
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SL/HL

Case study 2027: generative AI for image creation5 learning objectives · 9 practice questions
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265 practice questions across 25 topics. Free accounts practise with 20 sample questions in this subject; paid plans include every question.