Design Patterns and Principles Assessment

The video introduces a free ebook and interactive project on design patterns and solid principles. It covers key principles like single responsibility and interface segregation, and explores design patterns such as Singleton, strategy, and Observer. The video emphasizes learning through interactivity and provides resources for further exploration.

What resource is recommended for learning about design patterns and principles?

• A free ebook and interactive project

• A paid online course

• A set of video tutorials

• A series of podcasts

What does the Single Responsibility Principle advocate?

• A class should handle multiple responsibilities

• A class should have only one reason to change

• A class should be open for modification

• A class should depend on low-level modules

How does the Interface Segregation Principle improve code design?

• By combining multiple interfaces into one

• By avoiding the use of interfaces altogether

• By creating specific interfaces for different functionalities

• By using large, monolithic interfaces

What is the main idea behind the Open/Closed Principle?

• Classes should not use interfaces

• Classes should be open for extension but closed for modification

• Classes should be closed for extension

• Classes should be open for modification

What does the Dependency Inversion Principle emphasize?

• Modules should not use any abstractions

• Both high-level and low-level modules should depend on abstractions

• Low-level modules should depend on high-level modules

• High-level modules should depend on low-level modules

What is a key feature of the Singleton pattern?

• It ensures only one instance of a class exists

• It is primarily used for user interfaces

• It is used for creating complex objects

• It allows multiple instances of a class

How does the Command pattern benefit software design?

• By creating multiple instances of commands

• By simplifying user interfaces

• By avoiding the use of objects

• By encapsulating requests as objects

What problem does the Dairy Flag pattern address?

• It reduces unnecessary processing in updates

• It ensures only one instance of a class exists

• It helps manage multiple user interfaces

• It simplifies the creation of complex objects

Which design pattern is primarily about managing events?

• Factory

• Singleton

• Strategy

• Observer

What is the main benefit of using interactive exercises in learning?

• They allow learners to apply what they learn

• They provide theoretical knowledge

• They are easier than traditional exercises

• They require no prior knowledge