Which of these is NOT a valid approach to refactor a class violating SRP?
Combine all the responsibilities into a single method for better cohesion.
Extract separate functionalities into new classes.
Delegate responsibilities to other existing classes.
Use design patterns like Strategy or Template Method to separate concerns.
How does using interfaces contribute to the Open/Closed Principle?
Interfaces define a contract that can be implemented by multiple classes, enabling flexibility.
Interfaces allow for direct modification of existing class code.
Interfaces make code execution slower.
Interfaces force tight coupling between classes.
How do SOLID principles contribute to reducing code complexity?
By promoting modular and decoupled code
By enforcing strict coding standards
By promoting shorter code
By encouraging the use of design patterns
Which of these scenarios indicates a violation of the Interface Segregation Principle?
A single interface defines methods for both printing and saving a document.
A class inherits from an abstract base class and overrides its methods.
An interface is used to abstract the creation of objects.
A class implements multiple interfaces to achieve polymorphism.
Which scenario best exemplifies the Dependency Inversion Principle?
A 'DataProcessor' class depends on an 'IDataSource' interface, not a specific database implementation.
A 'LightSwitch' class is directly dependent on a 'LightBulb' class.
A 'Car' class directly instantiates and uses an 'Engine' class.
A 'Logger' class writes logs directly to a file.
Which of the following is a direct benefit of applying SOLID principles?
Reduced need for documentation
Guaranteed bug-free software
Faster initial development speed
Improved code reusability and extensibility
Why is the Open/Closed Principle important in software development?
It makes code less readable.
It complicates the development process.
It increases the risk of introducing bugs during modification.
It promotes code duplication.
What is a key benefit of adhering to the Interface Segregation Principle?
Improved code flexibility and maintainability.
All of the above.
Reduced code duplication.
Increased code reusability.
How does the Interface Segregation Principle contribute to loose coupling in software design?
By reducing the need for unit testing.
By promoting the use of concrete classes instead of interfaces.
By minimizing dependencies between classes to only what is absolutely necessary.
By encouraging the use of global variables for communication between classes.
In the context of the Open/Closed Principle, what does 'open for extension' mean?
The source code of a class should always be accessible for any developer to modify.
A class's behavior should be modifiable through inheritance or polymorphism.
All classes should be loosely coupled and easily replaceable.
Code should be heavily commented to explain every detail.