SOLID, Technical Aptitude & Coding Online Test

Q: What are the main Technical Aptitude tests?

Here are some key Technical Aptitude tests: Technical Aptitude Test Technical Aptitude & Python Test Technical Aptitude & JavaScript Test

The SOLID Technical Aptitude Online Test uses scenario-based MCQs to evaluate candidates on their understanding of software design principles based on SOLID principles. The test assesses candidates on their knowledge of Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion principles, as well as their ability to apply these principles in designing and implementing software systems. It also evaluates their familiarity with design patterns, refactoring techniques, code smells, and anti-patterns related to SOLID principles.

Covered skills:

SOLID Principles
Object Oriented Design
Technical Aptitude
Data Structures

Get started for free

Preview questions

About the SOLID, Technical Aptitude & Coding Test

The SOLID, Technical Aptitude & Coding Online 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:

Understanding and applying SOLID Principles
Designing and implementing Object-Oriented Design concepts
Demonstrating technical aptitude in problem-solving
Working with various data structures
Writing clean and maintainable code
Understanding and implementing design patterns
Handling exceptions and errors efficiently
Optimizing code for performance
Working with relational databases
Using version control systems effectively

1200+ customers in 80 countries

Use Adaface tests trusted by recruitment teams globally. Adaface skill assessments measure on-the-job skills of candidates, providing employers with an accurate tool for screening potential hires.

Get started for free

Preview questions

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 15,000+ questions. The actual questions on this SOLID, Technical Aptitude & Coding Test will be non-googleable.

🧐 Question
Easy Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	Solve
Which SOLID principle is followed by the given code snippet?
Medium Decryptor Strings	Solve
What does the following pseudo code print?
Hard Fibonacci codes Time Complexity Pseudo Code Algorithm Analysis	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 Concurrency Transaction Management	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
	Easy Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	2 mins SOLID	Solve
Which SOLID principle is followed by the given code snippet?
	Medium Decryptor Strings	2 mins Technical Aptitude	Solve
What does the following pseudo code print?
	Hard Fibonacci codes Time Complexity Pseudo Code Algorithm Analysis	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 Concurrency Transaction Management	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
	Paint says Bye! Solid Principle Application Object-oriented Programming Concepts	SOLID	Easy	2 mins	Solve
Which SOLID principle is followed by the given code snippet?
	Decryptor Strings	Technical Aptitude	Medium	2 mins	Solve
What does the following pseudo code print?
	Fibonacci codes Time Complexity Pseudo Code Algorithm Analysis	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 Concurrency Transaction Management	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

Get started for free

Preview questions

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

It's very easy to share assessments with candidates and for candidates to use. We get good feedback from candidates about completing the tests. Adaface are very responsive and friendly to deal with.

Kirsty Wood, Human Resources, WillyWeather

We were able to close 106 positions in a record time of 45 days! Adaface enables us to conduct aptitude and psychometric assessments seamlessly. My hiring managers have never been happier with the quality of candidates shortlisted.

Amit Kataria, CHRO, Hanu

We evaluated several of their competitors and found Adaface to be the most compelling. Great library of questions that are designed to test for fit rather than memorization of algorithms.

Swayam Narain, CTO, Affable

Why you should use Pre-employment SOLID, Technical Aptitude & Coding Online Test?

The SOLID, Technical Aptitude & Coding 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:

Applying SOLID principles in software development
Designing and implementing object-oriented design patterns
Demonstrating proficiency in technical aptitude
Utilizing various data structures in problem-solving
Implementing clean code practices
Performing unit testing and test-driven development
Optimizing code for performance and scalability
Debugging and troubleshooting software applications
Collaborating with cross-functional teams
Utilizing version control systems

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 SOLID, Technical Aptitude & Coding Online Test?

SOLID Principles: The SOLID principles are a set of five design principles in object-oriented programming that aim to make software systems more maintainable and extensible. They include the Single Responsibility Principle (SRP), Open/Closed Principle (OCP), Liskov Substitution Principle (LSP), Interface Segregation Principle (ISP), and Dependency Inversion Principle (DIP). By measuring this skill, recruiters can assess a candidate's understanding of these principles and their ability to apply them in software design.

Object Oriented Design: Object-oriented design is a programming paradigm that organizes software applications into modular components called objects, which have state, behavior, and identity. It promotes code reusability, maintainability, and scalability. Measuring this skill helps recruiters evaluate a candidate's proficiency in designing software systems using the principles of object-oriented programming.

Technical Aptitude: Technical aptitude refers to a candidate's ability to understand and apply technical concepts and principles in problem-solving and decision-making scenarios. It involves skills such as logical reasoning, analytical thinking, attention to detail, and problem-solving ability. Assessing technical aptitude in this test allows recruiters to gauge a candidate's overall technical competency and their potential to excel in a technical role.

Data Structures: Data structures are the fundamental building blocks of organizing and storing data in computer memory. They provide efficient ways to perform operations like searching, sorting, and manipulating data. Measuring this skill enables recruiters to assess a candidate's knowledge and ability to choose appropriate data structures for efficient algorithmic problem-solving and software development.

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 SOLID, Technical Aptitude & Coding Test to be based on.

Single Responsibility

Open-Closed

Liskov Substitution

Interface Segregation

Dependency Inversion

Inheritance

Polymorphism

Abstraction

Encapsulation

Aggregation

Composition

Static Methods

Java Streams

Recursion

Sorting Algorithms

Big O Notation

Binary Search

Stacks

Queues

Linked Lists

Binary Trees

Graphs

Hash Tables

Concurrent Programming

Garbage Collection

Memory Management

Database Normalization

SQL Queries

Indexes

Stored Procedures

Normalization Forms

Data Modeling

Transaction Management

Testing Techniques

Refactoring

Code Reviews

Debugging

Code Optimization

Design Patterns

Concurrency Patterns

Creational Patterns

Structural Patterns

Behavioral Patterns

Code Versioning

Branching and Merging

Git Commands

GitHub

GitLab

Continuous Integration

Continuous Delivery

Build Automation

Unit Testing

Integration Testing

Code Coverage

Agile Methodology

Scrum Framework

Kanban Boards

Pair Programming

Technical Documentation

What roles can I use the SOLID, Technical Aptitude & Coding Online Test for?

Software Engineer
Full Stack Developer
Backend Developer

How is the SOLID, Technical Aptitude & Coding Online 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

Applying design principles for user interface development
Working with relational databases and SQL
Using algorithms and data structures for efficient coding
Implementing code security measures
Integrating third-party libraries and APIs
Understanding and optimizing database queries
Developing and maintaining documentation
Analyzing and resolving software defects
Applying Agile and Scrum methodologies
Keeping up with industry trends and best practices

Preview this test

View sample scorecard

Try the most advanced candidate assessment platform

ChatGPT Protection

Non-googleable Questions

Web Proctoring

IP Proctoring

Webcam Proctoring

MCQ Questions

Coding Questions

Typing Questions

Personality Questions

Custom Questions

Ready-to-use Tests

Custom Tests

Custom Branding

Bulk Invites

Public Links

ATS Integrations

Multiple Question Sets

Custom API integrations

Role-based Access

Priority Support

GDPR Compliance

Screen candidates in 3 easy steps

Pick a test from over 500+ tests

The Adaface test library features 500+ tests to enable you to test candidates on all popular skills- everything from programming languages, software frameworks, devops, logical reasoning, abstract reasoning, critical thinking, fluid intelligence, content marketing, talent acquisition, customer service, accounting, product management, sales and more.

Invite your candidates with 2-clicks

Make informed hiring decisions

Get started for free

Preview questions

Have questions about the SOLID, Technical Aptitude & Coding Hiring Test?

What is SOLID, Technical Aptitude & Coding Test?

The SOLID, Technical Aptitude & Coding Test is designed to assess a candidate’s knowledge of SOLID Principles, Object-Oriented Design, Technical Aptitude, and Data Structures. Recruiters use this test to evaluate the skills required for senior roles in software development.

Can I combine the SOLID, Technical Aptitude & Coding Test with Python questions?

Yes, recruiters can request a custom test combining multiple skills. For example, you can assess Python skills with our Python Online Test alongside the SOLID, Technical Aptitude & Coding Test.

What topics are evaluated in the SOLID, Technical Aptitude & Coding Test?

This test covers:

SOLID Principles
Object-Oriented Design
Technical Aptitude
Data Structures. It includes 15 MCQs and one coding question.

How to use the SOLID, Technical Aptitude & Coding Test in my hiring process?

Use this test as a pre-screening tool early in your recruitment process. Add the test link to your job post or invite candidates via email. Adaface helps identify skilled candidates quickly and accurately.

Can I test JavaScript and NodeJS together in a test?

Yes, you can test JavaScript and NodeJS together. We recommend our JavaScript & NodeJS Test. It assesses skills relevant to both technologies.

What are the main Technical Aptitude tests?

Here are some key Technical Aptitude tests:

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.

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.

View sample scorecard

Along with scorecards that report the performance of the candidate in detail, you also receive a comparative analysis against the company average and industry standards.

View sample scorecard