DevOps Interview Questions and Answers

Last updated on Jan 04, 2023
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DevOps Interview Questions

DevOps refers to a culture of software engineering which has a perfect combination of software development along with its operations. Due to its proficiency and operational philosophy, it is an incredible part of the IT segment. If you are the one looking for a profession in DevOps then you would essentially require the skills in software development as well as operations. In this article, you will get some of the best and mostly asked DevOps interview questions that are framed by experience. To build stability in this field you have to gain extreme skills and understanding with development as well as operations.

Benefits of DevOps

  • It helps in faster innovations
  • It also provides less developmental cycles
  • It also reduces the deployment failures
  • Improvisations in communication and collaboration
  • It offers a stable operating environment
  • Significant increase inefficiencies
  • Cost reduction along with the infrastructure and IT headcount

Most Frequently Asked DevOps Interview Questions

Here in this article, we will be listing frequently asked DevOps Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q11. Can you explain Pair programming and its advantages in brief!

Pair programming is an engineering practice of the well defined and extreme programming rules. In these, two different programmers work simultaneously on one computer, on the same design, algorithm, code or test. Where one programmer acts as an "observer" while others act as a "driver", it is their shared responsibility to monitor the errors. Without any handoff, their roles can be exchanged or shifted at any point in the process.

Its significant advantage is that it helps in raising the theory among different points of view which can eventually help to increase our understanding of the same concept considering the code, algorithm or design.

Q12. What do you understand by continuous integration in DevOps?

When it comes to DevOps continuous delivery and continuous integration are very important to consider and understand. Both of them are critical steps where continuous integration refers to an automated build-up that results as a generation. It is a software development practice in which members of the teams frequently line up and integrate their code which later undergoes the generation process. It is then verified carefully along with the code written by the members. Each of these integrations is then verified daily and tested as a significant part of the development process.

Q13. Tell the major benefit to implement DevOps automation?

One of the core advantages of DevOps automation is that it manages the role of human error out of the CD equation.

Q14. What do you understand by continuous testing and continuous monitoring?

Continuous monitoring is required when the application is developed and deployed in order to check for its performance. With its help, it is possible to find the loopholes or defects which might have been missed by the team earlier. Continuous testing is utilized to make the application out to reach the end-users. Without sufficient continuous testing or unit testing and automation, it is not possible to get the desired results. To validate the code and integrate them with developers it is essentially required.

Q15. What do you understand by Git, mention some of its top commands?

Git refers to a distributed version control system that is used for recording the changes in source code during the time of development. It also monitors the set of project overtime and stores the required information in a structure called repository.

Some of the essential commands are-
  • Git config- for global username
  • Git init- for the repository name
  • Git clone- for clone
  • Git add- to add the file
Q16. Can you present a brief over trunk-based development?
Trunk based development signifies a source control branching model to organize software development. In this procedure, developers are engaged in code under a single branch which is known as strong and utilizes document techniques in order to create long-lived development execution. Trunk based development is a key enabler for a number of integrations.
Q17. Can you explain some deployment patterns in brief?

The most common and popularly used deployment patterns are Blue-Green deployment and Canary release. In blue-green deployment, two different and identical environments are present where the green environment refers to the initial production system. Actual deployment takes place in the blue environment. It is also responsible to monitor for in error fault and once everything starts working fine then the load balancing and another component instantly switch the green environment to blue.

Canary releases have the efficiency to roll out any specific feature to a subset for a developer. This release helps the developer to reduce the risk factor involved in the release of new features.

Q18. What do you understand by containers, also list down their benefits?

Containers in DevOps refers to the operating systems' virtualizations. A single container can be utilized to run everything including from staging the environment into production. This also consists of the entire runtime environment for example libraries, necessary executables, configuration files, binary code and many more. Containers are streamlined in order to create, deploy, redeploy and test the applications in various environments.

There most prominent benefits are-
  • Reduction in the overheads.
  • Improve productivity.
  • Consistency with operational tasks.
  • Application development is also enhanced.
  • Extreme efficiency.

It is a general question asked in DevOps interview questions.

Q19. What is continuous monitoring, can you name a few tools for it?

Continuous monitoring helps the developer to detect and analyze the security implications to get a better view of planned or unplanned changes. Continuous monitoring also helps to assess the vulnerabilities for errors that are in a space of threat. To deliver the information based on application performance and the patterns of usage it works better.

Some of the best continuous monitoring tools are-

  • Nagios
  • Tenable
  • Solarwinds
  • Lansweeper
  • Spiceworks
  • Snorts
Q20. What do you understand by Chef Resources?

Chef resource defines a small segment of the operating system in its desired state. It also refers to a configuration policy statement that is utilized to represent the desired state of any node and then to the current configuration. All together it helps resource providers and developers.

The functions of a Chef Resource are-
  • The present status of the target machine can be known for its help
  • it also defines the steps which are required to perform to get the target machines
  • It also specifies the resources for example templates, services, files or packages.

If you want to build a strong career in DevOps and skills with structure approach and thoughtfulness to get certified as a DevOps engineer, we are here to help you. The industry of DevOps is advancing and hence there is an absolute requirement for a DevOps professional and engineer. With these detailed DevOps interview questions, you will be able to develop a bright career and knowledge regarding the same field.

DevOps has the efficiency to fulfill the delivery and performance requirements of companies. The companies which have adopted this technology are Google, Amazon, Etsy and the list goes on. By delivering world-class performance and security large numbers of platforms are using DevOps. Why not make your first step with the DevOps interview questions and answers and decide your journey.

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