0478 · Cambridge IGCSE
0478/11
Computer Systems
Computer Science · June 2023 · Variant 1
Relative difficulty
Analysis source: Cambridge Assessment International Education
Analysis aligned to the official syllabus and assessment design.
3.5 / 5
150
210 min
Algorithm design and problem-solving
Cohort performance
Session statistics from official examination reports
Total marks
150
Duration
210 min
Session difficulty
3.5 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index.
While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly in structural logic, tracing, and the final 15-mark program design question.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Problem Solving & Reasoning
Weight: 8100%Solving &
Weight: 788%Theoretical Comprehension
Weight: 675%Procedural Application
Weight: 450%Syntax & Coding Precision
Weight: 225%Coding P
Weight: 113%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
Cambridge Principal Examiner Report — component performance and international standards
Level A*
Approx. 68% of maximum mark
Level A
Approx. 55% of maximum mark
Level B
Approx. 41% of maximum mark
Level C
Approx. 28% of maximum mark
Level D
Approx. 23% of maximum mark
Level E
Approx. 19% of maximum mark
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Match the expected response style for “Give” questions.
Give reasons and link mechanism to outcome; each point needs a because/so chain.
State features in sequence or list observable properties — do not explain causes unless asked.
Match the expected response style for “Convert” questions.
Match the expected response style for “Draw” questions.
Match the expected response style for “Implement” questions.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.5
Min per mark: 1.4
Min per mark: 1.4
Syllabus traceability
Topics linked to questions and mark weighting in this session
Algorithm design and problem-solving
41 marks this session
Cyber security
15 marks this session
Programming concepts
13 marks this session
The internet and the world wide web
13 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Algorithm design and problem-solving
Programming concepts
Arrays
Cyber security
Robotics
Methods of error detection
The internet and the world wide web
Data storage
Difficulty trend
How session difficulty has shifted across recent years
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1 Computer Systems:
Paper 2 Algorithms, Programming and Logic:
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Algorithm design and problem-solving
41 marks this session
Practise in RevuiCyber security
15 marks this session
Practise in RevuiProgramming concepts
13 marks this session
Practise in RevuiThe internet and the world wide web
13 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index.
- 2Message
While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly in structural logic, tracing, and the final 15-mark program design question.
Teacher briefing pack
One-page session summary for tutors and classroom review
June 2023 2023
Computer Science
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index. While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index.
While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly in structural logic, tracing, and the final 15-mark program design question.
- Total marks
- 150
- Duration
- 210 min
- Session difficulty
- 3.5 / 5
Session analysis
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index. While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly in structural logic, tracing, and the final 15-mark program design question.
Updated Jun 13, 2026
Paper breakdown
Paper 1 Computer Systems:
Paper 2 Algorithms, Programming and Logic:
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
77% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
Description / Explanation
45·12·30%
Coding & Databases
38·5·25%
Trace Table & Logic Circuit
35·6·23%
Short Answer / Multiple Choice
32·18·21%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 1 Section A (…
0.67 m/minPaper 1 Section B (…
0.71 m/minPaper 2 Section A (…
0.71 m/minTotal marks
105
Total time
150 min
Avg pace
0.70
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Artificial intelligence
85%85%
File handling
80%80%
Robotics
75%75%
Executive Difficulty Verdict
The May/June 2023 examination papers for IGCSE Computer Science (0478) present a moderate to high challenge, earning a solid 3.5 out of 5 difficulty index. While Paper 1 assesses core concepts in a straightforward manner, Paper 2 demands deep analytical capabilities, particularly in structural logic, tracing, and the final 15-mark program design question.
Exam tips
Paper format
- Duration
- 1h 45min
- Total marks
- 75
- Weighting
- 50%
- Question types
- Short Answer, Structured/Explain, Calculations / Tables
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.