ENSF 461 ACTUAL ASSESSMENT SCRIPT 2026 COMPLETE QUESTIONS AND FULL SOLUTION

ENSF 461 ACTUAL ASSESSMENT SCRIPT
2026 COMPLETE QUESTIONS AND FULL
SOLUTION

●● Benefits of DP
Answer: - Patterns provide a common vocabulary
- Promotes design reuse and avoid mistakes


●● Types of DP
Answer: 1. Creational
2. Structural
3. Behavioural


●● Creational Pattern Definition
Answer: provide a way to create objects
while hiding the creation logic, rather than instantiating objects directly
using the constructor
- abstracting the object-instan>a>on process


●● Structural Pattern Definition
Answer: these patterns concern class and object
composition

, - how objects/classes can be combined to form larger structures


●● Behavioural Pattern Definition
Answer: concerned with communication between objects


●● Gang of Four
Answer: four authors of the book, "Design Patterns: Elements of
Reusable Object-Oriented Software". Book contains 23 patterns


●● Creational Pattern Examples
Answer: - Factory Method
- Builder
- Abstract Factory
- Singleton
- Prototype


●● Structural Pattern Examples
Answer: - Adapter
- Bridge
- Composite
- Decorator
- Façade