Learn Design Patterns – Module 1 Lesson 1 – Quiz

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Question 1 of 5

1. Question

Which statement best describes what a design pattern is?

A proven template that describes a general approach for structuring classes and objects to address a recurring design problem
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A finished piece of code we copy and paste to address a known problem
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A reusable library we import to solve common architectural problems
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A strict rule that must always be applied whenever a known problem is encountered
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Question 2 of 5

2. Question

What primary cost does an ad-hoc solution impose when requirements change?

The application must be rewritten from scratch because ad-hoc code cannot be patched
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The team must switch to a different programming language to accommodate the new requirements
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A full code review from senior engineers is required before any structural change can be made
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The developer enters a trial-and-error iteration cycle reworking the structure until it becomes clean, flexible, and maintainable
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Question 3 of 5

3. Question

What are the two core benefits of using design patterns described in the lesson? (select all that apply)

They prevent reinventing the wheel by providing tested solution blueprints
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They guarantee better runtime performance than ad-hoc solutions
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They eliminate the need for unit tests because patterns are already proven correct
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They give teams a shared vocabulary that makes design communication more efficient
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Question 4 of 5

4. Question

Which of the following accurately describes the Gang of Four?

A group of four developers who created the Java language specification
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Four engineers at Google who published a distributed systems design guide in 2003
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Four authors who published a 1994 book cataloguing 23 object-oriented design patterns
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A committee that maintains the official Java design patterns standard
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Question 5 of 5

5. Question

Which concern does each Gang of Four pattern category primarily address?

Creational: class composition; Structural: object communication; Behavioral: object creation
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Creational: object creation; Structural: class and object composition; Behavioral: object communication and responsibility
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Creational: runtime behavior; Structural: concurrency management; Behavioral: data persistence
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Creational: interface design; Structural: database interaction; Behavioral: UI rendering
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Learn Design Patterns – Module 1 Lesson 1 – Quiz

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