CS Fundamentals: Design Patterns (GoF)
Test your knowledge of the classic Gang of Four design patterns — the reusable, battle-tested solutions to common object-oriented design problems.
Questions cover creational patterns like Singleton and Factory, structural patterns like Adapter, and behavioral patterns like Observer and Strategy.
These patterns show up constantly in real codebases and interviews alike — see how many you can recognize.
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Sample questions3 of 15 shown
Q1
Which design pattern is used to create objects without specifying the exact classes to instantiate?
Q2
What is the primary intent of the Singleton pattern?
Q3
Which of the following are Creational design patterns? (Select all that apply)
What This Quiz Covers
- Creational patterns: Singleton, Factory
- Structural patterns: Adapter, Decorator
- Behavioral patterns: Observer, Strategy
- When to apply a design pattern
- Pattern categories and their purpose
- Trade-offs of using design patterns
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