Robust ProgramsLow Exam FrequencyOCR

Defensive Design

Revise Defensive Design in Robust Programs for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This topic appears less often, but it can still pick up marks when it appears in mixed-topic papers.

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Building Software Armour

Introduction 2

Defensive Design Principles

Key Facts 3

Deep Dive: Maintainable Code

Deep Dive 4

Memory Trick: VSCAM

Key Facts 5

Exam Tips

Sample Flashcards

Why use comments?

To explain code so others can understand and maintain it

What is authentication?

Verifying a user's identity before granting access to a system

Sample Questions

What is the purpose of input validation in a program?

A. To check that the user is who they claim to be
B. To check that input data meets specified rules before processing
C. To encrypt data before it is stored
D. To remove duplicate records from a database

1 markfoundation

Describe three different types of validation check, giving an example of each.

3 marksstandard

exam-style questions

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