20 Infrastructure Testing Interview Questions and Answers

In order to ensure that a company’s infrastructure is able to handle the demands of its users, it is important to test it regularly. Infrastructure testing interview questions are designed to assess a candidate’s knowledge of how to test various aspects of a company’s infrastructure, such as its networks, servers, and storage systems. By knowing what to expect and how to answer these questions, you can improve your chances of impressing the hiring manager and landing the job.

Infrastructure Testing Interview Questions and Answers

Here are 20 commonly asked Infrastructure Testing interview questions and answers to prepare you for your interview:

1. What is infrastructure testing?

Infrastructure testing is a type of testing that focuses on verifying the functionality of the infrastructure that a software application will be running on. This can include testing things like the operating system, network, hardware, and other components that make up the environment in which the software will be running.

2. Can you explain what the software dependencies are in an infrastructure test setup?

In an infrastructure test setup, the software dependencies are the applications and services that need to be running in order for the infrastructure to be tested. This can include things like the operating system, the database, the web server, and so on. Without these dependencies, the infrastructure cannot be properly tested.

3. How can you automate tests using Selenium and Jenkins?

Selenium is a great tool for automating web browser tests, and Jenkins is a great tool for automating the execution of those tests. By combining the two, you can create a powerful testing infrastructure that can run your tests automatically and provide you with feedback on the results.

4. How do you use Docker to run Selenium tests?

Docker can be used to run Selenium tests by creating a Docker image with all of the necessary dependencies for running Selenium tests, and then using that image to launch a Docker container that runs the tests. This approach has the advantage of being able to run the tests in a consistent environment, and of being able to easily share the Docker image with others so that they can run the tests themselves.

5. Can you explain how you would use AWS CodeDeploy to create a CI/CD pipeline for automated infrastructure testing?

AWS CodeDeploy can be used to create a CI/CD pipeline for automated infrastructure testing by first creating a new application and then configuring it to run a series of tests against your infrastructure. Once the tests have been configured, you can then add a new deployment group and specify the testing environment that you want to use. Finally, you can create a new pipeline and add the CodeDeploy application as a stage in the pipeline.

6. How do you check if your application is deployed correctly on Amazon Web Services?

There are a few different ways that you can check to see if your application has been deployed correctly on Amazon Web Services. One way is to check the Amazon CloudWatch logs to see if there are any errors that have been logged. Another way is to use the Amazon Elastic Load Balancer to check if your application is receiving traffic and responding correctly.

7. What’s the best way to perform integration testing with Docker?

There are a few different ways to approach integration testing with Docker. One option is to use a tool like Testcontainers, which allows you to launch Docker containers from within your tests. This can be helpful if you need to test how your application interacts with other services that are running in Docker containers.

Another option is to use a tool like docker-compose to launch a group of Docker containers together. This can be helpful if you need to test how your application interacts with a complete environment that includes multiple services.

Finally, you can also launch Docker containers manually and then run your tests against them. This can be helpful if you need more control over the environment or if you want to test against a specific version of a service.

8. How would you simulate user activity on a website that has been deployed to cloud-based platforms like AWS or Google Cloud Platform?

One way to simulate user activity on a website that has been deployed to cloud-based platforms is to use a tool like Apache JMeter. JMeter can be used to create a test plan that will simulate a user going through the various steps on your website. This can be helpful in testing to see how your website will perform under real-world conditions.

9. What does the term “configuration drift” mean in context of infrastructure testing?

Configuration drift is the term used to describe the gradual changes that can occur in the configuration of a system over time. These changes can be small and insignificant, or they can be large and cause major problems. In either case, it is important to be aware of configuration drift and to have a plan in place to deal with it.

10. How do you suggest performing regression testing for applications running on multiple servers?

One approach to regression testing for applications running on multiple servers would be to create a test suite that can be run against each server individually. This would allow you to test for regressions on a per-server basis, and would also give you the ability to isolate any issues that may arise. Another approach would be to create a test suite that can be run against the entire system at once. This would give you a more comprehensive view of the system as a whole, but would also be more likely to uncover issues that span multiple servers.

11. Can you explain the differences between functional testing, performance testing, and security testing?

Functional testing is testing the functionality of the system to ensure that it works as expected. Performance testing is testing the system to ensure that it can handle the required load and scale. Security testing is testing the system to ensure that it is secure and that data is protected.

12. What types of applications require infrastructure testing?

Any application that interacts with a network or server in some way will require infrastructure testing. This includes applications that rely on the network for communication, as well as those that are hosted on a server. Infrastructure testing ensures that the application will be able to function properly in its intended environment.

13. How do you ensure your codebase is compatible with different OSs? Do you think this is required? Why or why not?

One way to ensure compatibility is to use a tool like Docker which can create consistent environments for development and testing. I think it is required to at least test on the most popular OSs that your application will be deployed on.

14. Is it possible to write unit tests when working with infrastructure? If yes, then how?

Yes, it is possible to write unit tests when working with infrastructure. This can be done by using a tool like Puppet or Chef to provision a test environment that is identical to the production environment. Once the test environment is provisioned, the infrastructure code can be tested in the same way as any other code.

15. What tools do you think are necessary to write effective infrastructure tests?

There are a few different tools that I think are necessary to write effective infrastructure tests. First, you need a tool that can generate load on your system in order to test its performance. Second, you need a tool that can monitor your system in order to identify any potential bottlenecks. Finally, you need a tool that can help you automate your tests so that you can run them on a regular basis.

16. Can virtual machines be used to perform infrastructure testing? If yes, then how?

Yes, virtual machines can be used to perform infrastructure testing. This can be done by using a tool like Vagrant to create and manage virtual machines, and then using a tool like Ansible to provision and configure those virtual machines for testing purposes.

17. Are there any challenges you face while testing infrastructures?

There are a few challenges that can come up while testing infrastructures. One is making sure that all of the different components of the infrastructure are compatible with each other. Another challenge is ensuring that the infrastructure can handle the load that it will be subjected to in a production environment.

18. What is the importance of creating a proper testing environment before deploying an application?

The importance of creating a proper testing environment before deploying an application cannot be understated. By having a testing environment that accurately reflects the production environment, you can be sure that your application will behave as expected when it is finally deployed. Additionally, testing in a controlled environment allows you to catch and fix any potential issues before they cause problems in production.

19. Is it possible to reuse existing automation scripts when writing infrastructure tests? If yes, then how?

Yes, it is possible to reuse existing automation scripts when writing infrastructure tests. One way to do this would be to use a tool like Selenium, which can automate web browsers. This would allow you to reuse scripts that you have already written for web application testing. Another way to reuse scripts would be to use a tool like Puppet, which can automate the provisioning and configuration of infrastructure. This would allow you to reuse scripts that you have already written for infrastructure provisioning and configuration.

20. What are some advantages of using JUnit for infrastructure testing?

JUnit is a great tool for infrastructure testing because it is easy to use and it is very versatile. You can use JUnit to test almost any type of infrastructure, from simple applications to complex distributed systems. Additionally, JUnit can be easily integrated with other testing tools and frameworks, making it a very powerful tool for infrastructure testing.