IB Computer Science HL · 2027 specimen
Unit 8: Abstract data types
16 past paper questions from 7 papers across 2 exam sessions. See what repeats, then practise the same skills with AI marking.
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HL archive · 2026 to 2027
Unit 8: Abstract data types
Latest exam session: Specimen 2027
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Topics in Unit 8: Abstract data types
In syllabus order. The ring is the share of the marks each one carries.
Exam pattern
How often each micro-topic has been examined, year by year. Each label is explained under the grid.
Does it repeat?
Top 4 of 6 micro-topics for the next sitting. Numbers are questions per year.
fewermore
| Micro-topic | 2014 | 2015 | 2016 | 2017 | 2019 | 2020 | 2023 | 2024 | 2025 | 2026 | 2027 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ·Evaluating linked lists, 2014: 0 questions | ·Evaluating linked lists, 2015: 0 questions | ·Evaluating linked lists, 2016: 0 questions | ·Evaluating linked lists, 2017: 0 questions | ·Evaluating linked lists, 2019: 0 questions | ·Evaluating linked lists, 2020: 0 questions | ·Evaluating linked lists, 2023: 0 questions | ·Evaluating linked lists, 2024: 0 questions | ·Evaluating linked lists, 2025: 0 questions | 5Evaluating linked lists, 2026: 5 questions | ·Evaluating linked lists, 2027: 0 questions | |
| ·Building linked lists, 2014: 0 questions | ·Building linked lists, 2015: 0 questions | ·Building linked lists, 2016: 0 questions | ·Building linked lists, 2017: 0 questions | ·Building linked lists, 2019: 0 questions | ·Building linked lists, 2020: 0 questions | ·Building linked lists, 2023: 0 questions | ·Building linked lists, 2024: 0 questions | ·Building linked lists, 2025: 0 questions | 3Building linked lists, 2026: 3 questions | 2Building linked lists, 2027: 2 questions | |
| ·Sets, 2014: 0 questions | ·Sets, 2015: 0 questions | ·Sets, 2016: 0 questions | ·Sets, 2017: 0 questions | ·Sets, 2019: 0 questions | ·Sets, 2020: 0 questions | ·Sets, 2023: 0 questions | ·Sets, 2024: 0 questions | ·Sets, 2025: 0 questions | ·Sets, 2026: 0 questions | 3Sets, 2027: 3 questions | |
| ·Core principles of ADTs, 2014: 0 questions | ·Core principles of ADTs, 2015: 0 questions | ·Core principles of ADTs, 2016: 0 questions | ·Core principles of ADTs, 2017: 0 questions | ·Core principles of ADTs, 2019: 0 questions | ·Core principles of ADTs, 2020: 0 questions | ·Core principles of ADTs, 2023: 0 questions | ·Core principles of ADTs, 2024: 0 questions | ·Core principles of ADTs, 2025: 0 questions | ·Core principles of ADTs, 2026: 0 questions | 1Core principles of ADTs, 2027: 1 question |
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- Regularin roughly one paper in six or more
- Less commonin fewer than one paper in fifteen
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Questions on Unit 8: Abstract data types, by exam session
Which papers asked about Unit 8: Abstract data types, and which question numbers. Open a paper to see them highlighted.
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Frequently asked questions
Short answers about this page.
Which Computer Science HL exam sessions are covered for Unit 8: Abstract data types?
14 exam sessions from 2026 to 2027, the latest Specimen 2027. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 7 papers in this archive.
Which Unit 8: Abstract data types topic comes up most?
Evaluating linked lists (8.1.2): in 23% of papers, last seen May 26 P2 TZ2. Usually "Sketch", worth about 4 marks in a paper that includes it.
Can I see the original question and mark scheme?
No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.
What do "banker", "due" and "rising" mean?
Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.
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