OOAD (Object Oriented Analysis Design) Test

About the test:

The OOAD (Object-Oriented Analysis and Design) Online Test uses scenario-based MCQs to evaluate candidates on their understanding of the principles, concepts, and techniques involved in designing object-oriented software systems. The test assesses candidates on their knowledge of requirements gathering, use case modeling, class and object modeling, interaction modeling, and state modeling. It evaluates their familiarity with design patterns, anti-patterns, and refactoring techniques, as well as their ability to apply UML (Unified Modeling Language) in modeling and designing software systems.

Covered skills:

Object-Oriented Concepts
Class Modeling
State Modeling
Design Patterns

Use Case Modeling
Interaction Diagrams
Object-Oriented Design Principles
Architectural Design

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9 reasons why

Adaface OOAD (Object Oriented Analysis Design) Assessment Test is the most accurate way to shortlist Java Developer (OOAD) Software Engineers

Reason #1

Tests for on-the-job skills

The OOAD (Object Oriented Analysis Design) Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Able to apply object-oriented analysis and design principles
Skilled in use case modeling for system requirements
Proficient in creating class diagrams to represent system components
Capable of creating interaction diagrams to illustrate system behavior
Able to model system states using state diagrams
Familiar with object-oriented design principles
Knowledgeable in design patterns for effective software design
Skilled in architectural design for scalable systems
Able to apply object-oriented concepts in software development
Experienced in technical aptitude for problem-solving

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

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The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this OOAD (Object Oriented Analysis Design) Test will be non-googleable.

🧐 Question
Hard Graph Traversal and Data Storage Graph Theory Algorithm Analysis	Solve
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
Medium Implementing a Browser's Back Button Stack Data Handling	Solve
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
Easy Linked List Element Removal Linked Lists Element Removal	Solve
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
Easy Patient Consultation Use Case Diagram	Solve
How would you model the following situation with a use case UML diagram? A doctor does a patient consultation together with the nurse. The nurse always has to write the notes during the consultation.
Medium Vertical Fork Activity Diagram	Solve
Review the following activity diagram: Which of the following action sequences are possible during one execution of the activity diagram? A: 1 → 2 → 4 B: 1 → 3 → 2 → 4 C: 1 → 2 → 4 → 3 D: 1 → 2 → 3 → 4
Medium Decryptor Strings	Solve
What does the following pseudo code print?
Hard Fibonacci codes Time Complexity Pseudo Code	Solve
Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true? A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same. B: CODE 2 is more space-efficient than CODE 3. C: CODE 3 is more space-efficient than CODE 2. D: CODE 2 is more time-efficient than CODE 1. E: CODE 3 is more time-efficient than CODE 1.
Hard Palindrome Test cases Strings	Solve
Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true? Testcases A: a B: aba C: aaa D: aac
Medium Rewards Activities Order Database Connection	Solve
A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%. The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts: Script 1: For users with reward <= 4000, set reward = reward * 1.02 Script 2: For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04 Script 3: For users with reward > 8000, set reward = reward * 1.06 Each script is to be executed separately. Which of the following options will update the rewards as expected: A: Execute Script 1 followed by Script 2 followed by Script 3 B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout D: Execute Script 3 followed by Script 2 followed by Script 1 E: Execute Script 2 followed by Script 3 followed by Script 1

	🧐 Question	🔧 Skill
	Hard Graph Traversal and Data Storage Graph Theory Algorithm Analysis	3 mins Data Structures	Solve
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
	Medium Implementing a Browser's Back Button Stack Data Handling	2 mins Data Structures	Solve
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
	Easy Linked List Element Removal Linked Lists Element Removal	2 mins Data Structures	Solve
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
	Easy Patient Consultation Use Case Diagram	2 mins UML	Solve
How would you model the following situation with a use case UML diagram? A doctor does a patient consultation together with the nurse. The nurse always has to write the notes during the consultation.
	Medium Vertical Fork Activity Diagram	3 mins UML	Solve
Review the following activity diagram: Which of the following action sequences are possible during one execution of the activity diagram? A: 1 → 2 → 4 B: 1 → 3 → 2 → 4 C: 1 → 2 → 4 → 3 D: 1 → 2 → 3 → 4
	Medium Decryptor Strings	2 mins Technical Aptitude	Solve
What does the following pseudo code print?
	Hard Fibonacci codes Time Complexity Pseudo Code	2 mins Technical Aptitude	Solve
Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true? A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same. B: CODE 2 is more space-efficient than CODE 3. C: CODE 3 is more space-efficient than CODE 2. D: CODE 2 is more time-efficient than CODE 1. E: CODE 3 is more time-efficient than CODE 1.
	Hard Palindrome Test cases Strings	2 mins Technical Aptitude	Solve
Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true? Testcases A: a B: aba C: aaa D: aac
	Medium Rewards Activities Order Database Connection	3 mins Technical Aptitude	Solve
A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%. The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts: Script 1: For users with reward <= 4000, set reward = reward * 1.02 Script 2: For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04 Script 3: For users with reward > 8000, set reward = reward * 1.06 Each script is to be executed separately. Which of the following options will update the rewards as expected: A: Execute Script 1 followed by Script 2 followed by Script 3 B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout D: Execute Script 3 followed by Script 2 followed by Script 1 E: Execute Script 2 followed by Script 3 followed by Script 1

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Graph Traversal and Data Storage Graph Theory Algorithm Analysis	Data Structures	Hard	3 mins	Solve
Consider the following pseudo code implementing a specific graph traversal algorithm: What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?
	Implementing a Browser's Back Button Stack Data Handling	Data Structures	Medium	2 mins	Solve
You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality? A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used. B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used. C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used. D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used. E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used. F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.
	Linked List Element Removal Linked Lists Element Removal	Data Structures	Easy	2 mins	Solve
Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list. Pseudo code: What will be the content of the linked list referred to by `result` after executing the above pseudo code?
	Patient Consultation Use Case Diagram	UML	Easy	2 mins	Solve
How would you model the following situation with a use case UML diagram? A doctor does a patient consultation together with the nurse. The nurse always has to write the notes during the consultation.
	Vertical Fork Activity Diagram	UML	Medium	3 mins	Solve
Review the following activity diagram: Which of the following action sequences are possible during one execution of the activity diagram? A: 1 → 2 → 4 B: 1 → 3 → 2 → 4 C: 1 → 2 → 4 → 3 D: 1 → 2 → 3 → 4
	Decryptor Strings	Technical Aptitude	Medium	2 mins	Solve
What does the following pseudo code print?
	Fibonacci codes Time Complexity Pseudo Code	Technical Aptitude	Hard	2 mins	Solve
Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true? A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same. B: CODE 2 is more space-efficient than CODE 3. C: CODE 3 is more space-efficient than CODE 2. D: CODE 2 is more time-efficient than CODE 1. E: CODE 3 is more time-efficient than CODE 1.
	Palindrome Test cases Strings	Technical Aptitude	Hard	2 mins	Solve
Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true? Testcases A: a B: aba C: aaa D: aac
	Rewards Activities Order Database Connection	Technical Aptitude	Medium	3 mins	Solve
A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%. The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts: Script 1: For users with reward <= 4000, set reward = reward * 1.02 Script 2: For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04 Script 3: For users with reward > 8000, set reward = reward * 1.06 Each script is to be executed separately. Which of the following options will update the rewards as expected: A: Execute Script 1 followed by Script 2 followed by Script 3 B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout D: Execute Script 3 followed by Script 2 followed by Script 1 E: Execute Script 2 followed by Script 3 followed by Script 1

Reason #4

1200+ customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment OOAD (Object Oriented Analysis Design) Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the OOAD (Object Oriented Analysis Design) Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About the OOAD (Object Oriented Analysis Design) Online Test

Why you should use Pre-employment OOAD (Object Oriented Analysis Design) Test?

The OOAD (Object Oriented Analysis Design) Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Ability to apply Object-Oriented Concepts in software development
Strong understanding of Use Case Modeling and its relevance in system analysis
Proficiency in Class Modeling and designing robust class structures
Expertise in creating Interaction Diagrams to illustrate system behavior
Thorough knowledge of State Modeling and its application in system design
Practical understanding of Object-Oriented Design Principles for creating scalable solutions
Familiarity with common Design Patterns and their implementation in software architecture
Ability to perform Architectural Design for complex systems
Experience in applying UML (Unified Modeling Language) for system analysis and design
Proficient in coding and problem-solving skills with a focus on Object-Oriented Programming

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the OOAD (Object Oriented Analysis Design) Test?

Object-Oriented Concepts:
Object-oriented concepts refer to the fundamental principles of object-oriented programming, such as encapsulation, inheritance, and polymorphism. Evaluating a candidate's understanding of these concepts is crucial as they form the basis of OOAD and are essential for designing scalable, maintainable, and robust software systems.
Use Case Modeling:
Use case modeling is a technique used to identify and define the functional requirements of a system from the perspective of its users. It helps in understanding how users interact with the system and allows for the identification of different scenarios, ensuring comprehensive coverage of system functionality.
Class Modeling:
Class modeling involves the identification and definition of classes, their attributes, and relationships in a software system. This skill is important to measure as it assesses the candidate's ability to design an effective class structure that accurately represents the system's entities and their interdependencies.
Interaction Diagrams:
Interaction diagrams, such as sequence diagrams and collaboration diagrams, are used to visualize the dynamic behavior of a software system. Measuring this skill helps assess the candidate's proficiency in representing and analyzing the interactions between objects during runtime.
State Modeling:
State modeling involves the identification and representation of different states that an object can transition through during its lifetime. Assessing this skill helps gauge the candidate's understanding of modeling state-based systems and their ability to design and manage complex state transitions.
Object-Oriented Design Principles:
Object-oriented design principles, such as SOLID principles, help guide the design and development of software systems. Evaluating this skill is essential to determine the candidate's knowledge of these principles and their ability to apply them effectively in designing scalable and maintainable software systems.
Design Patterns:
Design patterns are proven solutions to recurring design problems in software development. Measurement of this skill helps assess the candidate's familiarity with common design patterns and their ability to leverage them to solve design challenges and improve code modularity and reusability.
Architectural Design:
Architectural design involves the high-level structuring and organization of a software system. Evaluating this skill is vital to determine the candidate's ability to design scalable, robust, and maintainable architectures that align with the system's requirements and business goals.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for OOAD (Object Oriented Analysis Design) Test to be based on.
Object-Oriented Concepts
Use Case Modeling
Class Modeling
Interaction Diagrams
State Modeling
Object-Oriented Design Principles
Design Patterns
Architectural Design
Abstraction
Encapsulation
Inheritance
Polymorphism
Association
Aggregation
Composition
Dependency
Generalization
Realization
Use Case Diagrams
Activity Diagrams
Sequence Diagrams
Communication Diagrams
Collaboration Diagrams
State Diagrams
Behavioral Modeling
Entity-Relationship Diagrams
CRC Cards
Coupling
Cohesion
Single Responsibility Principle
Open-Closed Principle
Liskov Substitution Principle
Interface Segregation Principle
Dependency Inversion Principle
Factory Pattern
Singleton Pattern
Builder Pattern
Adapter Pattern
Decorator Pattern
Observer Pattern
Command Pattern
Strategy Pattern
Template Method Pattern
Prototype Pattern
Composite Pattern
Facade Pattern
Proxy Pattern
MVC architecture
Layered architecture
Microservices architecture
Client-Server architecture
RESTful architecture
Event-Driven architecture
Service-Oriented architecture
Model-View-Controller Pattern
Domain-Driven Design

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What roles can I use the OOAD (Object Oriented Analysis Design) Test for?

Java Developer (OOAD) Software Engineer
Systems Analyst
Software Architect

How is the OOAD (Object Oriented Analysis Design) Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Strong grasp of data structures and their efficient usage in software development
Solid understanding of technical aptitude and ability to solve complex technical problems
Experience in applying OOAD principles to design scalable and maintainable software
Proficiency in using UML diagrams to communicate effectively with stakeholders
Expertise in applying Design Patterns to improve code reusability and maintainability
Demonstrated ability to create efficient and intuitive user interfaces using OOAD
Understanding of architectural design principles and ability to design modular systems
Proficient in analyzing system requirements and creating effective use case models
Experience in designing class diagrams that accurately represent system structure
Ability to create comprehensive interaction diagrams to depict system behavior

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The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

85%

reduction in screening time

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OOAD (Object Oriented Analysis Design) Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

Non-googleable questions
IP proctoring
Screen proctoring
Web proctoring
Webcam proctoring
Plagiarism detection
Secure browser
Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.