Question 1 of 3 · No calculator needed
What is one benefit of placing repeated code in a subprogram?
A subprogram can be called whenever the task is needed, reducing duplication and allowing one maintained implementation.
Pearson Edexcel · GCSEComputer Science,
Computer Science,
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Specification 1CP2. Explore a topic, practise the skill, and see where to focus next.
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Question 2 of 3 · No calculator needed
An 8-bit unsigned calculation adds 11110000 and 00110000. Why can the stored result be incorrect?
240 + 48 = 288, which exceeds the 8-bit unsigned maximum of 255, so the available bits overflow.
Question 3 of 3 · No calculator needed
A payment system occasionally changes a balance incorrectly. Which evidence most directly helps investigators reconstruct what happened?
An audit trail records who performed each action and when, allowing investigators to reconstruct the sequence causing the error.
These tiles show your answers to three questions. They are a starting point, not a mastery score or grade prediction.
Computational thinking
Correct answer: The task can be reused and maintained in one place
A subprogram can be called whenever the task is needed, reducing duplication and allowing one maintained implementation.
Data
Correct answer: The correct total needs nine bits, causing overflow
240 + 48 = 288, which exceeds the 8-bit unsigned maximum of 255, so the available bits overflow.
Computers
Correct answer: An audit trail recording actions, users and timestamps
An audit trail records who performed each action and when, allowing investigators to reconstruct the sequence causing the error.
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.
01Computational thinking
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 Computational thinking vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
02Data
Specification reference: 2
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.
03Computers
Specification reference: 3
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 Computers vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
04Networks
Specification reference: 4
Fibre can carry data at high speed over distance and is resistant to electromagnetic interference. Installation cost may be higher, but the scenario prioritises reliability and performance.
Watch for: Do not describe Networks vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
05Issues and impact
Specification reference: 5
Continuous location records can reveal homes, routines and associations. Collecting data unnecessary for the service conflicts with purpose limitation and increases harm if it is misused or breached.
Watch for: Do not describe Issues and impact vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
06Problem solving with programming
Specification reference: 6
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 Problem solving with programming vaguely. Trace the algorithm, data or system state precisely and test boundary or failure cases.
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Pearson Edexcel · GCSE · Computer Science · 1CP2
Issue 1, January 2020; confirmed current August 2026
Source checked: 2026-08-28. 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 GCSE Computer Science route cover?
LearningP currently maps 6 assessed areas for specification 1CP2. 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 220 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.
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No. LearningP reports practice evidence, coverage, strengths and gaps. It does not guarantee or automatically predict examination outcomes.
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Use the official Pearson Edexcel specification and assessment-resource pages linked on this page, together with information supplied by the learner’s school.
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