Advanced Object-Oriented Programming Quizzes - Test Your Skills

Question 1

Which of the following is a disadvantage of using multithreading in an operating system?

Accepted Answer

Increased complexity and overhead

Answer

Increased concurrency

Answer

Reduced memory usage

Answer

Improved responsiveness

Question 2

Which of the following is NOT an algorithm specifically designed for process scheduling in operating systems?

Accepted Answer

Paging

Answer

First-Come First-Served (FCFS)

Answer

Shortest Job First (SJF)

Answer

Round-Robin

Question 3

Which of the following is not a type of system call?

Accepted Answer

Interrupt handling

Answer

File I/O

Answer

Process management

Answer

Memory management

Question 4

Which of these is NOT a common classification of operating systems based on their design and purpose?

Accepted Answer

Mobile Application

Answer

Interactive

Answer

Multi-User, Multi-Tasking

Answer

Real-Time

Question 5

Which of the following is NOT a primary function of an operating system?

Accepted Answer

Providing a user interface

Answer

Managing system resources

Answer

Scheduling processes

Answer

Protecting system resources

Question 6

Which of the following is a defining feature of a distributed operating system?

Accepted Answer

Loosely-coupled processing

Answer

Tightly-coupled processing

Answer

Centralized control

Answer

Shared memory

Question 7

Which of the following is NOT a primary type of operating system?

Accepted Answer

Database Management

Answer

Single-user

Answer

Multi-user

Answer

Real-time

Question 8

What is the primary role of an operating system?

Accepted Answer

To manage system resources and offer services to applications

Answer

To serve as a user-friendly interface for computer interaction

Answer

To provide long-term storage and organization for user files

Question 9

Which of the following is NOT a traditional type of operating system?

Accepted Answer

Virtual Machine

Answer

Batch

Answer

Interactive

Answer

Real-Time

Question 10

Which characteristic is **not** unique to Real-Time Operating Systems (RTOS)?

Accepted Answer

Time-sharing

Answer

Deterministic behavior

Answer

Preemptive multitasking

Answer

Efficient interrupt handling

Question 11

In operating systems, which component is not solely related to file systems?

Accepted Answer

Page table

Answer

File allocation table

Answer

Directory structure

Answer

Inode table

Question 12

In a paging memory management scheme, the memory is divided into fixed-size pages. What is a primary benefit of using this paging scheme?

Accepted Answer

Easier memory management for the operating system

Answer

Reduced memory waste

Answer

Faster computer performance

Answer

Simplified memory sharing between processes

Question 13

In I/O management, which component is crucial for enabling communication between software and hardware devices?

Accepted Answer

Device Drivers

Answer

System Calls

Answer

Interrupt Handling

Answer

Scheduling Algorithms

Question 14

Which of the following is an example of method overloading in Java?

Accepted Answer

Creating a method with the same name but different parameter types

Answer

Inheriting a method from a superclass and implementing it in the subclass

Answer

Using a generic method to work with different data types

Answer

Encapsulating data and methods in a single object

Question 15

What is the primary benefit of using generics in Java?

Accepted Answer

Improved type safety and prevention of errors

Answer

Enhanced code readability and maintainability

Answer

Increased performance by reducing the need for casting

Answer

Creation of custom data types

Question 16

Which design pattern ensures that a class has only one instance and provides global access to that instance?

Accepted Answer

Singleton

Answer

Factory Method

Answer

Builder

Answer

Observer

Question 17

Which OOP principle is violated when a subclass can access private members of its superclass?

Accepted Answer

Encapsulation

Answer

Inheritance

Answer

Polymorphism

Answer

Abstraction

Question 18

What is the primary purpose of a constructor in OOP?

Accepted Answer

To initialize an object's state when it is created

Answer

To define the behavior of an object

Answer

To provide a way to access an object's private members

Answer

To allow an object to inherit properties from its parent class

Question 19

Which of the following is an advantage of utilizing a static method in Java?

Accepted Answer

Can be invoked without instantiating an object of the class

Answer

Can access private members of the class

Answer

Can override methods in subclasses

Answer

Can be used to implement polymorphism

Question 20

What is the difference between a shallow copy and a deep copy in OOP?

Accepted Answer

Shallow copy creates a new object that references the same underlying data, while deep copy creates a new object with its own copy of the data.

Answer

Deep copy creates a new object that references the same underlying data, while shallow copy creates a new object with its own copy of the data.

Answer

Shallow copy is always faster than deep copy.

Answer

Deep copy is always more memory-efficient than shallow copy.

Question 21

Which design pattern is used to create objects without specifying the exact class of the object that will be created?

Accepted Answer

Factory Method

Answer

Singleton

Answer

Builder

Answer

Observer

Question 22

In advanced OOP application development, which ethical concern is of utmost importance?

Accepted Answer

Protecting user data and ensuring responsible use of personal information

Answer

Optimizing performance and code reusability

Answer

Handling exceptions and ensuring application stability

Question 23

What is a key benefit of utilizing design patterns in OOP?

Accepted Answer

Enhanced code reusability and maintainability

Answer

Increased application performance

Answer

Reduced development time

Answer

Improved code security

Question 24

What is a potential downside of utilizing design patterns in software development?

Accepted Answer

Increased software complexity and potential comprehension challenges

Answer

Enhanced code reusability and maintainability

Answer

Improved software quality and reduced development time

Answer

Hindered collaboration and knowledge sharing among developers

Question 25

What is the primary purpose of a design pattern?

Accepted Answer

Offer a pre-defined solution to a common software design issue

Answer

Define methods that subclasses must implement

Answer

Create new subclasses from existing classes

Answer

Provide a complete implementation for a specific problem domain

Question 26

Which option is NOT considered a benefit of utilizing polymorphism in OOP?

Accepted Answer

Diminished memory consumption

Answer

Enhanced code flexibility

Answer

Improved code reusability

Answer

Simplified code maintainability

Question 27

Which design pattern is used for defining a family of algorithms and providing an interface to choose and configure them?

Accepted Answer

Strategy

Answer

Factory Method

Answer

Singleton

Answer

Observer

Question 28

In multiple inheritance, what is the ability of a class to inherit methods and instance variables from multiple parent classes referred to as?

Accepted Answer

Multiple inheritance

Answer

Polymorphism

Answer

Multiplexing

Answer

Multilevel inheritance

Question 29

What is the essence of dynamic binding?

Accepted Answer

The binding of a method to an object is determined at runtime

Answer

The binding of a method to an object is determined at compile time

Answer

Both options are correct

Answer

Neither option is correct

Question 30

In unit testing, the AAA pattern stands for:

Accepted Answer

Arrange, Act, Assert

Answer

Assert, Arrange, Act

Answer

Act, Assert, Arrange

Answer

Arrange, Assert, Act

Question 31

Which of the following design patterns is specifically used for creating singleton classes?

Accepted Answer

Singleton

Answer

Factory Method

Answer

Builder

Answer

Observer

Question 32

What is a key benefit of utilizing the Observer design pattern?

Accepted Answer

Loose coupling between objects

Answer

Improved performance

Answer

Reduced code complexity

Question 33

What is the primary purpose of type casting in OOP?

Accepted Answer

To convert an object from one type to another

Answer

To check if an object is of a specific type

Answer

To improve code readability

Question 34

What is the essential difference between a class and an object in OOP?

Accepted Answer

Class is a blueprint while object is an instance

Answer

Object is a blueprint while class is an instance

Answer

Class and object are the same

Question 35

Which of the following is NOT a key benefit of using polymorphism in OOP?

Accepted Answer

Guaranteed performance improvements

Answer

Enhanced code reusability

Answer

Improved extensibility

Answer

Reduced code coupling

Question 36

Generics in OOP allow creating classes and methods that can operate on different data types. What is the correct syntax to declare a generic class in Java?

Accepted Answer

class MyClass<T> {}

Answer

class <T> MyClass {}

Answer

class <generic> MyClass {}

Answer

class MyClass implements T {}

Question 37

Which design pattern is commonly utilized to offer a consistent interface for accessing a set of classes with varying implementations?

Accepted Answer

Strategy

Answer

Factory Method

Answer

Singleton

Answer

Observer

Question 38

Consider the following code: 'public class Animal { public void move() {} }'. Which of the following is a valid method to instantiate the 'Animal' class?

Accepted Answer

Animal a = new Animal();

Answer

Animal a = Animal();

Answer

Animal = new Animal();

Answer

new Animal = a;

Question 39

Consider the following code: 'public class Person { private String name; public String getName() { return name; } }'. Which statement accurately describes this code?

Accepted Answer

It demonstrates encapsulation by concealing the 'name' variable

Answer

It demonstrates inheritance by extending another class

Answer

It demonstrates polymorphism by overriding a method

Answer

It exemplifies none of the OOP principles

Question 40

When defining a class in OOP, which keyword is used to limit access to specific class members?

Accepted Answer

private

Answer

public

Answer

protected

Answer

final

Question 41

Which of the following is a key characteristic of polymorphism in OOP?

Accepted Answer

The ability to define a method with the same name in different classes

Answer

The ability to inherit methods from a superclass

Answer

The ability to overload a method with different parameters

Answer

The ability to create objects of different types

Question 42

What is the purpose of using generics in OOP?

Accepted Answer

To allow data structures to work with any type of data

Answer

To enhance code performance

Answer

To create objects that can inherit from multiple classes

Answer

To define classes that can be customized for specific data types

Question 43

What is the key difference between a class and an object in OOP?

Accepted Answer

A class is a blueprint, while an object is an instance of that blueprint

Answer

An object is a blueprint, while a class is an instance of that blueprint

Answer

A class and an object are the same thing

Answer

An object is more complex than a class

Question 44

What is the primary purpose of an interface in OOP?

Accepted Answer

To define a set of methods that a class must implement

Answer

To create a new data type

Answer

To extend an existing class

Answer

To override methods in a superclass

Question 45

Which type of inheritance is not supported in Java?

Accepted Answer

Multiple inheritance

Answer

Single inheritance

Answer

Multilevel inheritance

Answer

Hierarchical inheritance

Question 46

What is the primary function of a constructor in OOP?

Accepted Answer

To initialize an object's state

Answer

To define the behavior of an object

Answer

To create a new instance of an object

Answer

To destroy an object

Question 47

Which design pattern is used to create objects without specifying their exact class?

Accepted Answer

Factory

Answer

Singleton

Answer

Builder

Answer

Observer

Question 48

What is the role of an interface in OOP?

Accepted Answer

To define a contract that classes must implement

Answer

To provide a concrete implementation of a particular behavior

Answer

To represent a relationship between objects

Answer

To encapsulate data and behavior

Question 49

Which of the following violates the Liskov Substitution Principle?

Accepted Answer

A subclass can throw new exceptions than its superclass

Answer

A subclass can access protected members of its superclass

Answer

A subclass can override methods of its superclass

Answer

A subclass cannot override final methods of its superclass

Question 50

What is the primary purpose of a constructor in a Java class?

Accepted Answer

To initialize the state of an object

Answer

To define the behavior of an object

Answer

To create a new instance of an object

Answer

To provide access to protected members of an object

Question 51

In object-oriented programming, what is polymorphism and how does it benefit software design? Discuss any potential drawbacks.

Accepted Answer

Polymorphism allows objects of different classes to respond similarly to the same message.

Answer

Polymorphism prevents objects from changing their behavior or state over time.

Answer

Polymorphism is mainly a design pattern used to minimize code duplication.

Question 52

Which of the following best describes polymorphism?

Accepted Answer

The ability for objects of different classes to respond to the same message with different behaviors

Answer

The restriction of object behavior based on its class

Answer

The encapsulation of data and methods within an object

Question 53

What is the primary purpose of using generics in OOP?

Accepted Answer

To create data structures that can operate on different types of data without the need for explicit type casting

Answer

To enforce strict typing in code, preventing runtime errors

Question 54

Which design pattern is specifically used to provide a unified interface to a set of related interfaces?

Accepted Answer

Adapter

Answer

Singleton

Answer

Factory Method

Question 55

What is the main advantage of utilizing inheritance in Object-Oriented Programming?

Accepted Answer

Enhancing code reusability and extensibility through the inheritance of attributes and behaviors

Answer

Reducing the complexity of code by eliminating duplicate functionality

Answer

Ensuring data hiding and encapsulation within classes

Answer

Boosting performance by minimizing object creation

Question 56

Which of the following is a core principle of the SOLID design principle?

Accepted Answer

Promoting loosely coupled, highly cohesive classes for enhanced maintainability

Answer

Preventing the usage of global variables in code

Answer

Enforcing strict adherence to specific design patterns

Question 57

What is the primary purpose of employing a dependency injection framework?

Accepted Answer

Decoupling the creation and assembly of objects from the code that utilizes them, increasing flexibility and testability

Answer

Enhancing performance through optimized object caching

Answer

Enforcing singleton behavior for all classes in the application

Question 58

What is a key advantage of using reflection in Java?

Accepted Answer

Enabling the dynamic inspection and manipulation of classes and objects at runtime, providing flexibility and extensibility

Answer

Boosting performance through code optimization techniques

Answer

Preventing security vulnerabilities by restricting access to sensitive information

Question 59

What is the primary objective of using Aspect-Oriented Programming (AOP)?

Accepted Answer

Separating cross-cutting concerns from core functionality, improving code modularity and maintainability

Answer

Enhancing performance through parallelization techniques

Answer

Enforcing encapsulation and data hiding principles

Question 60

According to the principle of OOP, which of the following allows a derived class to inherit and extend the functionality of its base class?

Accepted Answer

Inheritance

Answer

Abstraction

Answer

Polymorphism

Answer

Encapsulation

Question 61

Which design pattern is used to represent a collection of objects that can be iterated over uniformly, without revealing their underlying implementation?

Accepted Answer

Iterator

Answer

Factory

Answer

Observer

Answer

Singleton

Question 62

What is the primary purpose of using an interface in Java?

Accepted Answer

To establish a contract that classes must adhere to.

Answer

To create classes that cannot be instantiated.

Answer

To group related methods together.

Answer

To provide multiple inheritance.

Question 63

In Java, what is the key difference between a checked and an unchecked exception?

Accepted Answer

A checked exception must be handled or declared in the method signature, while an unchecked exception does not.

Answer

A checked exception is always more severe than an unchecked exception.

Question 64

Which of the following is NOT a principle of the SOLID design principles?

Accepted Answer

Polymorphism

Answer

Single Responsibility Principle

Answer

Open-Closed Principle