logo

Cambridge IGCSE Computer Science practice

Paper 1 structured question: Methods of error detection

Try the question first, then check the answer and practise the same topic again.

At a glance

1

Paper

1

Marks

Topic

Methods of error detection

Exam-style question

Try this first

Paper 1Computer Systems1 marks

Check digits are used in various applications to ensure data integrity.

Description

Check Digit Example

A check digit is calculated from the other digits in a number and is used to verify the accuracy of data entries. For example, in an ISBN, the last digit is a check digit that helps identify errors in the preceding digits.

  1. a

    State What is the purpose of a check digit?

    Aim for approximately 1 distinct marking point.

    [1]

0 of 1 part answered

Answer every part before opening the mark scheme.

Common mistake

No common mistake is linked to this question yet.

Related flashcards

Flashcard 1 of 6

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted

Paper 1 structured question: Methods of error detection

Paper 1Computer Systems3 marks

Description

Check Digit Functionality

Check digits are used in identifiers like ISBNs and barcodes to detect errors in data entry. They are calculated from the other digits and appended to the end of the number.

  1. a

    Explain How do check digits help in identifying errors in data entry?

    Aim for approximately 3 distinct marking points.

    [3]