Question 1 of 3 · No calculator needed
What is an algorithm?
An algorithm specifies an ordered, finite and sufficiently precise method that can be followed to obtain a result.
Pearson Edexcel International GCSE · International GCSEComputer Science,
Computer Science,
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Specification 4CP0. Explore a topic, practise the skill, and see where to focus next.
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Question 2 of 3 · No calculator needed
A program must read ten temperatures and display the highest. Which design is correct?
Initialising highest from the first real input handles negative values; each later comparison maintains the invariant that highest is the greatest value seen so far.
Question 3 of 3 · No calculator needed
What is -5 in eight-bit two's-complement form?
Start with +5 as 00000101, invert every bit to 11111010 and add 1 to obtain 11111011.
These tiles show your answers to three questions. They are a starting point, not a mastery score or grade prediction.
Problem solving
Correct answer: A finite sequence of unambiguous steps for solving a problem
An algorithm specifies an ordered, finite and sufficiently precise method that can be followed to obtain a result.
Programming
Correct answer: Read the first value into highest, compare each remaining value and replace highest when a larger value is read
Initialising highest from the first real input handles negative values; each later comparison maintains the invariant that highest is the greatest value seen so far.
Data
Correct answer: 11111011
Start with +5 as 00000101, invert every bit to 11111010 and add 1 to obtain 11111011.
For parents: look at the explanation together. A correct answer is encouraging; a missed answer gives you something specific to work on. Broader practice over time is needed to understand progress.
YOUR TOPIC MAP
6 areasFind your starting point.
01Problem solving
Specification reference: 1
Repeated halving is generally more efficient on large sorted data, while fitness for purpose also requires evidence that normal, boundary and absent-target cases behave correctly.
Watch for: Do not describe Problem solving vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
02Programming
Specification reference: 2
A count-controlled loop is appropriate when the number of repetitions is known in advance. A condition-controlled loop is better when repetition depends on a changing condition.
Watch for: Do not describe Programming vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
03Data
Specification reference: 3
Hexadecimal is a compact human-readable notation: one hex digit maps exactly to four binary bits. Changing the notation does not reduce the underlying number of stored bits.
Watch for: Do not describe Data vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
04Computers
Specification reference: 4
Cloud storage is located remotely and normally reached through a network. Connectivity, provider availability, privacy and ongoing cost can therefore be disadvantages compared with local control.
Watch for: Do not describe Computers vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
05Communication and the internet
Specification reference: 5
Security must be built through design, implementation and verification: limited privileges reduce impact, reviews and modular tests find defects, patching removes known weaknesses and audit trails support detection.
Watch for: Do not describe Communication and the internet vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
06The bigger picture
Specification reference: 6
Responsible disclosure gives the organisation an opportunity to reduce harm while avoiding unauthorised access or premature release of exploit details. Exact legal duties depend on jurisdiction and authorisation.
Watch for: Do not describe The bigger picture vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
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Pearson Edexcel International GCSE · International GCSE · Computer Science · 4CP0
Issue 1, November 2016
Source checked: 2026-07-30. The current official specification controls assessment requirements and option choices.
Can parents and students try LearningP before signing up?
Yes. This page offers three original questions from three different skills on this exact course. Each answer has an explanation, followed by a sample heatmap showing what was correct and what to revisit. No account is needed, and taster answers are not saved.
What does the three-question heatmap tell a parent?
It shows the outcome of these three answers and gives a specific skill to discuss or practise next. It is not a full assessment, a mastery score or a grade prediction. Broader practice over time is needed to understand progress.
What does the Pearson Edexcel International GCSE International GCSE Computer Science route cover?
LearningP currently maps 6 assessed areas for specification 4CP0. The visible topic map below is derived from the verified route; the current official specification remains controlling.
How many LearningP questions support this route?
The verified source bank contains 221 original LearningP question records for this route. Every mapped area meets the current publication minimum and passed the latest blocker and review audit.
Does LearningP reproduce official exam questions?
No. LearningP uses official specifications and assessment materials to map content and demand, while its practice questions and explanations are independently authored.
Can this page predict an exam grade?
No. LearningP reports practice evidence, coverage, strengths and gaps. It does not guarantee or automatically predict examination outcomes.
Where should current assessment information be checked?
Use the official Pearson Edexcel International GCSE specification and assessment-resource pages linked on this page, together with information supplied by the learner’s school.
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