25 Best DevOps Interview Questions and Answers

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DevOps Interview Question and answers are specially designed for the fresher as well as experienced who wants to crack the interview. These will help you to get the right job at the reputed company as it has an essential aspect related to the topic.

DevOps 25 Best Interview Questions and Answers

Q1. What is DevOps?

DevOps is the perfect blend of two essential things; Development and Operations. Most people consider DevOps as the software, tool, or framework, but it is the combined tool that gives support and runs as automation. It is an Agile methodology based on both the things; Development and Operations. 

Q2. What is the requirement for DevOps?

DevOps becomes the need with the advancement in technology. It helps to deliver the work faster as well as in a better way so that it can be capable of meet the demands of customers. 

Q3. What is the fundamental principle of DevOps?

The key fundamental principle of DevOps is as follows:

  • Continuous Integration
  • Continuous Deployment
  • Automation
  • Infrastructure as a Code
  • Continuous Monitoring
  • Security

Q4. What tools can be used for DevOps?

  • Docker
  • Git
  • Jenkins
  • ELK 
  • Puppet
  • Ansible
  • Nagios

Q5. What is VCS?

VCS, aka Version Control System, is the developed software platform that gathers developers at a single platform to work simultaneously as well as save the entire work records. Main features of VCS are as follows:

  • Let the developers work together.
  • Separate changes management as no overwriting is there.
  • Record every history of the codes.

Q6. How many types of VCS?

There is two primary division of VCS you can see, such as:

  1. Central Version Control System
  2. Distributed/Decentralized Version Control System

Q7.  What is Git, and what language used in it? 

Git is an SCM, aka source code management tool that ensures smooth working of every size of the project. It contains an entire history of projects, and the language used in Git is C. C makes the working of this swift and effective.

Q8.  What is SubGit?

To migrate the tool of Git, we used subGit that helps to build a writable Git mirror. 

Q9. What are the Advantages of Ansible?

It has various advantages, but some of the benefits are as follows:

  • It is a very low overhead.
  • It improves performance.
  • It is idempotent.
  • There is no need for a new installation process.
  • Easy to understand.

Q10. In which can you use Ansible?

It plays a crucial role in the IT industry to manage apps to remote nodes. With the help of a single command, we can make changes into 100 nodes. 

Q11. Explain Docker and its image.

A containerization technology that is gathering all the apps in the form of vessels for the effective working of apps. While the image is the primary source for Docker container. If we also talk about docker container then, it is running instance of the images of docker

Q12. Is DevOps the part of Agile methodology?

Yes, it is the part of Agile methodology, with the only difference is that it can only be implemented over the development section. At the same time, Agile can be used for operations and developments both.

Q13. Are there any advantages to using Git?

Yes, Git has several advantages which you can take by using it such as; 

  • It has high availability.
  • It is collaboration friendly.
  • It has better network performance. 
  • Data redundancy and replication.

Q14. Suggest ways to start and stop the docker container?

To stop the container, you will require a stop container ID while restarting the ID to restart it.

Q15. On which platform docker runs well?

There are only two platforms over which docker can run, such as Cloud and Linux. It can’t run over Mac and Microsoft. 

Linux:

  • Ubuntu 12.04 LTS+
  • CentOS 6+
  • Gentoo
  • Fedora 20+
  • RHEL 6.5+
  • CRUX 3.0+ArchLinux
  • openSUSE 12.3+
  • CRUX 3.0+

Cloud:

  • Amazon EC2
  • Microsoft Azure
  • Rackspace
  • Google Compute Engine

Q16. What is Scrum?

It is beneficial things that divide complex into more essential software chunks. It has three roles, mainly such as scrum master, team and product owner.)

Q17. How to build a Git repository?

If the repository does not exist, you can create it by running a command of ‘git init’ By running this command. 

Q.18 What is Jenkins?

It is a tool of continuous integration. This Java scripted open-source tool that keeps a record on VCS. It used to look after the entire methods of the concerned team.

Q19. Difference between Maven, Ant, and Jenkins?

Jenkins is a tool of continuous integration while the other two build technologies.

Q20. What are the benefits of Jenkins?

  • Support huge plugin. 
  • It tracks bugs at an early stage.
  • Create an automatic build report.

Q21. Tools for Jenkins supports?

Jenkins supports mostly eight kinds of tools such as;

  • Mercurial
  • Perforce
  • AccuRev
  • CVS
  • Subversion
  • Git
  • Clearcase
  • RTC

Q22. Steps to setup Jenkins jobs?

  1. Just go to the menu to select a new item.
  2. Now input a name for the job by selecting freestyle.
  3. Submit Ok 

Q23. Mention the daily activities of the current role?

  • Working of deployments and JIRA tickets.
  • Working to resolve problems of fails deployments.
  • Look after the infrastructure and maintenance. 

Q24. Explain the integration of Jenkins with other tools.

First, we need to navigate to Jenkins’s management. After that, you need to put all the details like a version of Java and Maven, URL of Git, Path, etc.

Q25. What automation you have done in your projects?

Well, in many projects I did:

  • Automation of password expiry.
  • Clearing the old log files or history.
  • Code quality threshold violations.

So, the questions mentioned above are shortlisted to crack the interview of DevOps. It is usually asked at the meetings so, be ready with the answers to impress the interviewers. DevOps Training in pune is best institute for that. Best of luck!

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