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About the test:

The UML Online Test uses scenario-based multiple choice questions to evaluate candidates on their understanding of the Unified Modeling Language (UML) and its various diagrams, including use case diagrams, class diagrams, sequence diagrams, state machine diagrams, activity diagrams, and component diagrams. The test assesses candidates' proficiency in modeling software systems using UML, as well as their ability to interpret and analyze UML diagrams to understand system requirements, design software architectures, and communicate effectively with stakeholders.

Covered skills:

  • UML Fundamentals and Notation
  • Class Diagrams and Object-Oriented Concepts
  • Use Case Diagrams and Modeling
  • Sequence and Communication Diagrams
See all covered skills

9 reasons why
9 reasons why

Adaface UML Online Test is the most accurate way to shortlist UML Developers

Reason #1

Tests for on-the-job skills

The questions for Senior candidates assess advanced topics like:

  1. Design Patterns: Questions assess knowledge of common design patterns such as Singleton, Observer, and Factory. Understanding design patterns is crucial for developing scalable and maintainable software systems.
  2. Architecture Modeling: Senior candidates are expected to be proficient in creating high-level architecture models that capture the system's structure and behavior. This knowledge is crucial for senior roles as they will be responsible for designing and leading the development of complex software systems.
  3. System Integration: Questions evaluate the candidate's understanding of how to integrate different software systems and technologies. This knowledge is important for senior roles as they will be responsible for integrating new technologies into existing systems.
  4. Object-Oriented Analysis and Design: Senior candidates are expected to have a solid understanding of object-oriented analysis and design principles such as inheritance, polymorphism, and encapsulation. This knowledge is important for designing software systems that are modular, reusable, and maintainable.
Reason #2

No trick questions

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.

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 ->
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.

These are just a small sample from our library of 10,000+ questions. The actual questions on this UML Online Test will be non-googleable.

🧐 Question


Patient Consultation
Use Case Diagram
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
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
🧐 Question🔧 Skill


Patient Consultation
Use Case Diagram
2 mins


Vertical Fork
Activity Diagram
3 mins
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Patient Consultation
Use Case Diagram
Easy2 mins
Vertical Fork
Activity Diagram
Medium3 mins
Reason #4

1200+ customers in 75 countries

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

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment UML Online 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.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the UML Online 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.

invite candidates
Reason #7

Detailed scorecards & benchmarks

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.

test completion rate
Reason #9

Advanced Proctoring

What roles can I use the UML Online Test for?

  • UML Developer
  • Business Analyst

What topics are covered in the UML Online Test?

UML Basics
Use Case Diagrams
Class Diagrams
Object Diagrams
Sequence Diagrams
Collaboration Diagrams
State Machine Diagrams
Activity Diagrams
Component Diagrams
Deployment Diagrams
UML Modeling Concepts
UML Modeling Tools
UML Best Practices
UML Diagram Elements
Modeling Relationships
Object-Oriented Programming Concepts
Singapore government logo

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.

reduction in screening time


What is the UML online test?

The UML online test is a skills assessment that evaluates a candidate's knowledge of the Unified Modeling Language (UML), which is a visual modeling language used for software design and development. The test typically includes questions on UML concepts, notations, and modeling techniques.

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.

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
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser

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.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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