Dependency Injection (DI) is a design pattern that allows for decoupling components in a system. It provides objects with their dependencies, making it easier to manage and test code by reducing direct dependencies between components.
Which of the following is the main benefit of using Dependency Injection in OOP?
A Reduced code reusability
B Increased memory usage
C Improved code modularity
D Faster object creation
Dependency Injection improves code modularity by reducing the dependencies between classes. It allows components to be easily replaced and extended without changing the dependent code, facilitating easier testing and maintenance.
Which of the following best describes Object-Oriented Scripting Languages?
A Handle system hardware directly
B Avoid inheritance
C Use classes and objects
D Use direct memory management
Object‐Oriented Scripting Languages, like Python and JavaScript, support OOP principles, using classes and objects to structure code. These languages simplify development by allowing easy manipulation of data and behavior in modular components.
Which feature of OOP is most important for creating flexible and reusable code?
A Inheritance
B Abstraction
C Encapsulation
D Polymorphism
Inheritance allows classes to inherit properties and methods from other classes. This promotes code reuse and helps in creating flexible systems, as common functionality is shared across classes, reducing redundancy and making code easier to extend.
Which OOP concept allows for creating multiple methods with the same name but different signatures?
A Method overriding
B Abstraction
C Method Overloading
D Polymorphism
Method overloading allows multiple methods with the same name to exist, but with different parameters. This provides flexibility, enabling the same method name to perform different tasks depending on the arguments passed to it.
Which principle of OOP helps in hiding the internal workings of an object and exposing only the essential functionalities?
A Inheritance
B Abstraction
C Encapsulation
D Polymorphism
Abstraction allows the implementation details of an object to be hidden from the user, exposing only necessary information through well-defined interfaces. It simplifies interaction with complex systems by providing a high-level view while hiding unnecessary complexity.
Which of the following is a common feature of OOP in Game Development?
A Avoidance of inheritance
B Focus on data-only structures
C Extensive use of objects and classes
D Use of procedural programming
In game development, OOP is widely used to model game entities as objects with properties and behaviors. Classes are used to define common characteristics, while inheritance allows game objects to share and extend functionality.
What does Polymorphism allow in OOP?
A Data abstraction
B Same method, different implementations
C Multiple classes, one object
D Code reuse
Polymorphism allows the same method name to have different implementations depending on the object calling it. This enables a unified interface while allowing each subclass to provide its own specific behavior, making code more flexible and reusable.
What is the main purpose of using Interfaces in OOP?
A Define object behavior
B Store object data
C Simplify object initialization
D Prevent inheritance
Interfaces define a contract for behavior without providing implementation. Classes that implement an interface are required to provide their own implementations for the methods defined in the interface, ensuring consistent behavior across different classes.
What is an example of a Scripting Language that supports Object-Oriented Programming?
A Java
B Python
C C++
D Fortran
Python is a scripting language that supports object‐oriented programming principles, such as inheritance, polymorphism, and encapsulation. It allows developers to write reusable, maintainable, and scalable code for a wide range of applications.
Which of the following is an example of Dependency Injection?
A Passing an object to a constructor
B Creating global variables
C Using static methods
D Instantiating objects within a method
Dependency Injection involves passing dependencies (e.g., objects) to a class or method via its constructor or setter methods. This approach reduces tight coupling between classes and allows for easier testing and maintenance.
Which OOP concept supports the concept of “one object having many forms”?
A Inheritance
B Encapsulation
C Abstraction
D Polymorphism
Polymorphism supports the concept of “one object having many forms,” where the same method or object can take different forms depending on the context or the object invoking it. This helps in implementing flexible and dynamic behavior in OOP.
In OOP, which of the following is used to define behavior of an object?
A Class constructor
B Instance variable
C Inheritance
D Method or function
Object cloning creates an exact copy of an existing object, including both data and methods. Object instantiation, on the other hand, creates a new object from a class without copying data from any existing object.
What is a key feature of Object-Oriented Scripting Languages in web development?
A Use of functional programming
B Lack of inheritance
C Easy integration with web APIs
D Static type system
Object‐Oriented Scripting Languages like JavaScript and Python make it easier to integrate with web APIs, allowing developers to build dynamic, interactive websites. These languages use objects to handle HTTP requests and responses seamlessly.
What is the key benefit of using SOLID principles in OOP?
A Easier debugging
B Better system architecture
C Reduced code complexity
D Faster code execution
SOLID principles improve the design and architecture of a system by ensuring that the code is maintainable, flexible, and scalable. They guide developers in creating systems that are easier to understand, modify, and extend.