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.

Q1. What do you understand by DevOps?

DevOps refers to the close association of development as well as operational tasks. It does not refer to a set of tools or any software framework rather it is a combination of specialized tools that help in the automation of the entire infrastructure. It also refers to the implementation of Agile methodology on development as well as operational upfronts.

Q2. What is a Puppet manifest?

The basic component which is required for the Puppet configuration management policy is known as Puppet Manifest. Each of the Puppet nodes or Agents has your configuration details in their native language provided in Puppet master. The details are provided based on how resources should be configured and their terms. It also declared the resources by defining the state which needs enforcement on any note. To develop complex Puppet modules, they are considered the major building blocks.

Q3. Elaborate version control system (VCS)?

Version control system or VCS refers to software which is utilized by the developers to work simultaneously maintaining the history of their previous as well as current actions.

Some of the salient features of VCS are-
  • It helps developers to work together.
  • It does not permit overwriting on changes.
  • Maintains a complete history of earlier provisions and complete changes.

There are basically two types of version control systems found which are-

  • A central version control system, its example is Git, Bitbucket
  • A distributed or decentralized version control system, its example is SVN.
Q4. What is the significance of DevOps?

DevOps is actively used in the organizations to maintain application delivery and close alignment of services considering the business objectives. There are several reasons to adopt the technology offered by DevOps, some of them are-

  • 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
Q5. Can you name some core operations in DevOps for infrastructure as well as application development projects?
The core operations in DevOps for infrastructure are as follows-
  • Provisioning
  • Configuration
  • Orchestration
  • Deployment
For application development, the core operations are as follows-
  • Code building
  • Code coverage
  • Unit testing
  • Packaging
  • Deployment
Q6. What are the performance indicators used in DevOps?

The majorly used key performance indicators (KPIs) in DevOps are-

  • Deployment frequency and failure
  • Change lead time
  • Change in volume
  • Mean time to detection
  • Mean time to recovery (MTTR)
  • Meantime in between failures
  • Change in failure rate
  • Efficiency
  • Pipeline adoption
  • Performance
Q7. What are the major components and popular tools of DevOps?

The most significant tools in DevOps are-

  • Git- version control system tool
  • Jenkins- continuous integration tool
  • Docker- containerization tool
  • Puppet- configuration management and deployment tool
  • Ansible- configuration management and deployment tool
  • Nagios- continuous monitoring tool

The key components in DevOps essentially involve-

  • Continuous integration
  • Continuous delivery
  • Entire microservices
  • Infrastructure as a code
  • Monitoring and logging
  • Communication and collaboration
Q8. What are the significant adoptions of DevOps in the industry?

The most recognizable adoption of DevOps seen in the industry involves the utilization of agile and various developmental processes and methodologies. It also involves the demand for an increase in production release from a business point of view. Its other adoptions involve-

  • Large availability of cloud infrastructure for external as well as internal providers
  • increase in data center configuration management tools
  • Improvisation in automation
  • Increased focus on test automation and continuous integration process
  • Enhanced practices over critical issues
Q9. What is the difference between DevOps and Agile?
DevOps Agile
This practice supports development as well as operations It is an approach focusing over development
It manages the end-to-end engineering procedure It can manage a complex project
It assists in faster deliveries and end-to-end business solutions It assists in software development
Puppet, Chef, and AWS are some of the popular tools Some of the popular tools are JIRA, Kanboard, and Bugzilla
It has shorter release cycles It supports Agile release cycles
It asks feedback from customers It has self-feedback functioning

It is almost always asked in the DevOps interview questions.

Q10. What is Git, present a comparative note between SVN and Git.

Git is basically a source code management tool that can handle multiple projects with efficiency and perfection. It is utilized to store the repositories for remote servers. Git SVN
1. It is a decentralized version control tools It is a centralized version control tool
2. Push and pull operations are faster Comparatively slower
3. It belongs to the third generation of version control tools This belongs to the second generation version control tools
4. Offline commits can be done Only online commits are possible
5. Work information is shared directly No data or information is shared automatically
6. Client nodes share the repositories on local systems The history gets stored on server side repositories

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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