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ML Infrastructure Engineer Test

The ML Infrastructure Engineer Test assesses a candidate's proficiency in designing and managing machine learning infrastructure. Through a mix of scenario-based MCQs and a Python coding challenge, it evaluates knowledge in areas like Generative AI, DevOps, MLOps, and core machine learning algorithms, ensuring candidates can effectively support ML operations.

Covered skills:

  • Generative AI
  • DevOps Practices
  • Machine Learning Operations
  • Machine Learning Algorithms
  • Python Programming
  • Infrastructure as Code
  • Continuous Integration Continuous Deployment
  • Model Deployment Strategies
  • Monitoring and Logging
  • Cloud Platforms Usage
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About the ML Infrastructure Engineer Assessment Test


The ML Infrastructure Engineer 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:

  • Proficient in designing and implementing machine learning models.
  • Skilled in deploying models using MLOps best practices.
  • Understanding of Generative AI concepts and frameworks.
  • Ability to automate infrastructure using Infrastructure as Code (IaC).
  • Competent in setting up continuous integration and deployment pipelines.
  • Experience in monitoring and logging for ML models and applications.
  • Strong problem-solving skills using Python programming.
  • Able to optimize machine learning algorithms for performance.
  • Knowledgeable about cloud platform services and their application in ML workflows.
  • Expertise in DevOps practices to enhance collaboration and productivity.

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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 ML Infrastructure Engineer Test will be non-googleable.

🧐 Question

Medium

Resource Analysis
Process Management
System Performance
Log Analysis
Solve
As a senior DevOps engineer, you are tasked with diagnosing performance issues on a Linux server running Ubuntu 20.04. The server hosts several critical applications, but lately, users have been experiencing significant slowness. Initial monitoring shows that CPU and memory utilization are consistently high. To identify the root cause, you check the output of `top` and `ps` commands, which indicate that a particular process is consuming an unusually high amount of resources. However, the process name is generic and does not clearly indicate which application or service it belongs to. You also examine `/var/log/syslog` for any unusual entries but find nothing out of the ordinary. Based on this situation, which of the following steps would most effectively help you identify and resolve the performance issue?
A: Increase the server's physical memory and CPU capacity.
B: Use the `lsof` command to identify the files opened by the suspect process.
C: Reboot the server to reset all processes.
D: Examine the `/etc/hosts` file for any incorrect configurations.
E: Run the `netstat` command to check for abnormal network activity.
F: Check the crontab for any recently added scheduled tasks.

Medium

Streamlined DevOps
Continuous Integration
Scripting
Git
Shell Scripting
Solve
You are in charge of developing a Bash script for setting up a continuous integration pipeline for a web application. The source code is hosted in a Git repository. The script's goals include:

1. Ensuring the local copy of the repository in /var/www/html is updated to the latest version.
2. Creating a .env file with APP_ENV=production in the project root if it doesn't already exist.
3. Running a test suite with ./run_tests.sh and handling any test failures appropriately.
4. Logging the current timestamp and commit hash in deployment_log.txt in the project root if tests pass.

Which of the following script options would most effectively and safely accomplish these tasks?
 image

Easy

Gradient descent optimization
Gradient Descent
Learning Rate Schedules
Optimization Techniques
Solve
You are working on a regression problem using a simple neural network. You want to optimize the model's weights using gradient descent with different learning rate schedules. Consider the following pseudo code for training the neural network:
 image
Which of the following learning rate schedules would most likely result in the fastest convergence without overshooting the optimal weights?

A: Constant learning rate of 0.01
B: Exponential decay with initial learning rate of 0.1 and decay rate of 0.99
C: Exponential decay with initial learning rate of 0.01 and decay rate of 0.99
D: Step decay with initial learning rate of 0.1 and decay rate of 0.5 every 100 epochs
E: Step decay with initial learning rate of 0.01 and decay rate of 0.5 every 100 epochs
F: Constant learning rate of 0.1

Medium

Less complex decision tree model
Model Complexity
Overfitting
Data Transformation
Overfitting Prevention
Solve
You are given a dataset to solve a classification problem using a decision tree algorithm. You are concerned about overfitting and decide to implement pruning to control the model's complexity. Consider the following pseudo code for creating the decision tree model:
 image
Which of the following combinations of parameters would result in a less complex decision tree model, reducing the risk of overfitting?

A: max_depth=5, min_samples_split=2, min_samples_leaf=1
B: max_depth=None, min_samples_split=5, min_samples_leaf=5
C: max_depth=3, min_samples_split=2, min_samples_leaf=1
D: max_depth=None, min_samples_split=2, min_samples_leaf=1
E: max_depth=3, min_samples_split=10, min_samples_leaf=10
F; max_depth=5, min_samples_split=5, min_samples_leaf=5

Easy

n-gram generator
String Manipulation
Algorithm
Solve
Our newest machine learning developer want to write a function to calculate the n-gram of any text. An N-gram means a sequence of N words. So for example, "black cats" is a 2-gram, "saw black cats" is a 3-gram etc. The 2-gram of the sentence "the big bad wolf fell down" would be [["the", "big"], ["big", "bad"], ["bad", "wolf"], ["wolf", "fell"], ["fell", "down"]]. Can you help them select the correct function for the same?
 image

Easy

Recommendation System Selection
Recommender Systems
Collaborative Filtering
Content-Based Filtering
Solve
You are tasked with building a recommendation system for a newly launched e-commerce website. Given that the website is new, there is not much user interaction data available. Also, the items in the catalog have rich descriptions. Based on these requirements, which type of recommendation system approach would be the most suitable for this task?

Easy

Sensitivity and Specificity
Confusion Matrix
Model Evaluation
Sensitivity
Specificity
Solve
You have trained a supervised learning model to classify customer reviews as either "positive" or "negative" based on a dataset with 10,000 samples and 35 features, including the review text, reviewer's name, and rating. The dataset is split into a 7,000-sample training set and a 3,000-sample test set.

After training the model, you evaluate its performance using a confusion matrix on the test set, which shows the following results:
 image
Based on the confusion matrix, what are the sensitivity and specificity of the model?
🧐 Question 🔧 Skill

Medium

Resource Analysis
Process Management
System Performance
Log Analysis

3 mins

DevOps
Solve

Medium

Streamlined DevOps
Continuous Integration
Scripting
Git
Shell Scripting

2 mins

DevOps
Solve

Easy

Gradient descent optimization
Gradient Descent
Learning Rate Schedules
Optimization Techniques

2 mins

Machine Learning
Solve

Medium

Less complex decision tree model
Model Complexity
Overfitting
Data Transformation
Overfitting Prevention

2 mins

Machine Learning
Solve

Easy

n-gram generator
String Manipulation
Algorithm

2 mins

Machine Learning
Solve

Easy

Recommendation System Selection
Recommender Systems
Collaborative Filtering
Content-Based Filtering

2 mins

Machine Learning
Solve

Easy

Sensitivity and Specificity
Confusion Matrix
Model Evaluation
Sensitivity
Specificity

2 mins

Machine Learning
Solve
🧐 Question 🔧 Skill 💪 Difficulty ⌛ Time
Resource Analysis
Process Management
System Performance
Log Analysis
DevOps
Medium 3 mins
Solve
Streamlined DevOps
Continuous Integration
Scripting
Git
Shell Scripting
DevOps
Medium 2 mins
Solve
Gradient descent optimization
Gradient Descent
Learning Rate Schedules
Optimization Techniques
Machine Learning
Easy 2 mins
Solve
Less complex decision tree model
Model Complexity
Overfitting
Data Transformation
Overfitting Prevention
Machine Learning
Medium 2 mins
Solve
n-gram generator
String Manipulation
Algorithm
Machine Learning
Easy 2 mins
Solve
Recommendation System Selection
Recommender Systems
Collaborative Filtering
Content-Based Filtering
Machine Learning
Easy 2 mins
Solve
Sensitivity and Specificity
Confusion Matrix
Model Evaluation
Sensitivity
Specificity
Machine Learning
Easy 2 mins
Solve
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Why you should use Pre-employment ML Infrastructure Engineer Test?

The ML Infrastructure Engineer 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:

  • Implementing generative AI models.
  • Using DevOps tools for automation.
  • Applying ML algorithms to datasets.
  • Developing CI/CD pipelines.
  • Writing efficient Python scripts.
  • Deploying models with ML Ops practices.
  • Using cloud platforms for deployments.
  • Implementing monitoring and logging tools.
  • Creating infrastructure with code.
  • Managing model lifecycle in production.

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 ML Infrastructure Engineer Test?

Generative AI: Generative AI focuses on creating models that generate new content, such as images, text, or music, based on learned patterns from input data. This skill is crucial for roles that require innovative solutions and automation in content creation. It signals an engineer's capability to build complex models that can enhance productivity and create novel outputs.

DevOps Practices: DevOps practices encompass the methodologies that integrate development and operations, aiming for faster development cycles and more reliable software releases. Proficiency in these practices ensures that engineers can work efficiently in collaborative environments, overseeing seamless updates and maintenance of systems.

Machine Learning Operations: Machine Learning Operations, or MLOps, involves deploying and maintaining machine learning models in production reliably and efficiently. Testing for MLOps proficiency indicates an engineer's ability to scale, automate, and manage ML workflows in a stable manner.

Machine Learning Algorithms: Understanding machine learning algorithms is essential for building models that can predict or classify data based on learned patterns. Mastery of these algorithms reflects a candidate's capacity to select and apply the right techniques to solve specific problems effectively.

Python Programming: Python programming is a cornerstone in the data science and machine learning fields due to its simplicity and powerful libraries. Measuring this skill highlights an engineer's ability to implement complex algorithms and build data-driven applications.

Infrastructure as Code: Infrastructure as Code (IaC) is the process of managing and provisioning computing infrastructure through machine-readable configuration files. This skill is vital for enabling consistent environments, automating setups, and enhancing resource management efficiency.

Continuous Integration Continuous Deployment: Continuous Integration Continuous Deployment (CI/CD) refers to the automated process of integrating code changes and deploying them to production. A strong grasp of CI/CD ensures that engineers can maintain high software quality with reduced risk of deployment failures.

Model Deployment Strategies: Model deployment strategies focus on deploying ML models into production systems effectively and efficiently. This competency suggests the candidate's ability to ensure models are accessible and perform optimistically in a live environment.

Monitoring and Logging: Monitoring and logging involve tracking system performance and recording data for troubleshooting and optimization. Being adept with these skills ensures that engineers can detect and resolve issues promptly, maintaining system integrity and performance.

Cloud Platforms Usage: Cloud platforms provide scalable resources and services needed for complex computations and storage in machine learning projects. Familiarity with cloud platforms indicates an engineer's capability to leverage these services for cost-effective and flexible infrastructure management.

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 ML Infrastructure Engineer Test to be based on.

Generative Models
GANs
Transformer Models
DevOps Pipelines
CI/CD
IaC
Docker Basics
Kubernetes
Terraform
AWS
Azure
Google Cloud
MLOps Lifecycle
Model Deployment
Data Versioning
Experiment Tracking
Error Handling
Python Syntax
Python Libraries
Scikit-learn
TensorFlow
PyTorch
Hyperparameter Tuning
Feature Engineering
Apache Kafka
ML Monitoring
Logging Tools
Git
Version Control
Cloud Storage
API Integration
Security Best Practices
Load Balancing
Autoscaling
Environment Management
Code Refactoring
Test Automation
Resource Allocation
Parallel Processing
Scripting
Model Serving
Latency Optimization
Data Ingestion
Job Scheduling
Configuration Management
Deployment Strategies

What roles can I use the ML Infrastructure Engineer Test for?

  • ML Infrastructure Engineer
  • Machine Learning Engineer
  • DevOps Engineer
  • Data Scientist
  • AI Engineer
  • Cloud Engineer
  • Site Reliability Engineer
  • Software Engineer
  • Data Engineer
  • Automation Engineer

How is the ML Infrastructure Engineer 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

  • Optimizing model performance in deployment.
  • Scaling ML infrastructures efficiently.
  • Ensuring data security in cloud deployments.
  • Automating DevOps operations at scale.
  • Implementing advanced monitoring solutions.
  • Designing robust integration strategies.
  • Building complex pipelines with CI/CD.
  • Debugging ML deployment issues.
  • Enhancing generative AI capabilities.
  • Utilizing cutting-edge ML frameworks.

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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AI Cheating Detection with Honestly

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

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Have questions about the ML Infrastructure Engineer Hiring Test?

What is the ML Infrastructure Engineer Test?

The ML Infrastructure Engineer Test is designed to assess candidates on skills such as Generative AI, DevOps, MLOps, Machine Learning, and Python. It is used by recruiters to identify top talents for senior ML infrastructure engineering roles.

Can I combine the ML Infrastructure Engineer Test with DevOps questions?

Yes, recruiters can request a custom test with multiple skills. You can explore our DevOps Online Test for more details on how we assess DevOps skills.

What topics are evaluated in the ML Infrastructure Engineer Test?

The test evaluates topics including Generative AI capabilities, ML operations, model deployment strategies, code infrastructure, CI/CD pipelines, and cloud platform usage.

How to use the ML Infrastructure Engineer Test in my hiring process?

Use the test as a pre-screening tool. Include a link to the test in your job post or invite candidates by email to streamline and improve your candidate selection process.

What are some main AI and machine learning tests?

Explore other tests like Deep Learning Test and Machine Learning Assessment Test for broader assessments on AI and ML.

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:

  • Hidden AI Tools Detection with Honestly
  • 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.

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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.

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