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Exam-style practice

Development and testing answer explanations

Review worked answers and explanations for Development and testing. Aligned to Cambridge IGCSE Information and Communication Technology.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 3 structured question: Development and testing

Paper 3Practical TestPractical4 marks

Method

Testing Method for Data Entry System

The developer will enter different types of test data into the system, record the actual output, compare it with the expected output, and note any discrepancies. If errors are found, corrective actions will be taken and retesting performed.

StepDescription
1Prepare test data sets (normal, abnormal, extreme)
2Input test data into the system
3Record actual output
4Compare actual output with expected output
5Identify errors and take corrective measures
6Retest corrected parts
  1. a

    Identify the independent variable in this testing method.

    [1]
  2. b

    Describe how the developer ensures the reliability of the test results.

    [2]
  3. c

    Suggest one improvement to increase the accuracy of the testing method.

    [1]