Top 10 DevOps Interview Questions

DevOps is not just based on the use of tools. It also has its base on a number of important practices that can help in bridging the gap between development and operations in areas of integration and deployment.

Now, let’s take a quick look at some of the most common questions asked in DevOps interview.

Q1. What Are The Key Trends In DevOps?

As more and more businesses are adopting the DevOps principles, here are possible changing landscape and trends in DevOps coupled with its trajectory:

  • Many DevOps-based automation tools are going to get a roll up.
  • Many credible organizations will challenge agile and identify DevOps as the new ALM methodology.
  • Testing and automation would gain prominence.
  • DevOps engineers are currently the highest paid practitioners of IT.
  • Deployment and testing are done more frequently in comparison to the way it was in the past.

Q2. What are the most popular DevOps tools?

Some of the most popular DevOps tools are:

  • Git : Version Control System tool
  • Jenkins : Continuous Integration tool
  • Selenium : Continuous Testing tool
  • Puppet, Chef, Ansible : Configuration Management and Deployment tools
  • Nagios : Continuous Monitoring tool
  • Docker : Containerization tool

Q3. What are the prerequisites for successful DevOps implementation?

For successful DevOps implementation, the pre-requisites would include:

  • Senior level commitment in the organization.
  • Need for change must be communicated clearly across the organization.
  • Automated tools for compliance to process.
  • Version control software.
  • Automated Testing and Deployment.

Q4. Name the key components of DevOps?

Some of the key components include:

  • Continuous Integration
  • Continuous Testing
  • Continuous Delivery
  • Continuous Monitoring

Q5. What are the typical job roles associated with DevOps?

  • The DevOps Architect – S/He is the leader who will be responsible for the entire DevOps process.
  • The DevOps Engineer – S/He should be experienced with SCM, Agile or Version Control, CI /CD and the setting up of automation tools for the same, Infrastructure automation and Database management skills. Any developer exhibiting decent skills in coding or scripting with the acumen to get into deployment or system administration can easily qualify for the role of a DevOps engineer.

Q6. What are the primary benefits of DevOps implementation?

The best answer can be your previous experience with DevOps. In case you don’t have any, the following points can help:

Technical benefits:

  • Continuous delivery of software
  • Less complex problems needing the fix
  • Faster problem resolutions

Business benefits:

  • Faster delivery of features
  • Stable operating environments
  • More time available to add value (rather than fix or maintain)

Q7. What are the scripting tools used in DevOps?

Ruby and Python.

Q8. What are your predictions on the future of DevOps?

Based on the latest market trends, following can be predicted for the future of DevOps:

  • Culture, the most important differentiator – Culture is going to be the key differentiator for DevOps. Both culture and progress are going to be the principle paths for a successful DevOps journey. The implementation of DevOps culture paves the way for organizational success.
  • Containers and microservices Adoption – Microservices are best suited for DevOps because of their isolated nature, well-defined interfaces, improvised cycle times, and aligned architecture.
    Containerization has also grown in popularity.
  • Seamless Collaboration with big data – DevOps and big data are taking a collective step toward the design of predictive analytics.
  • Minimizing downtime – Adopting DevOps comes with several benefits in the form of minimum downtime and faster recovery.

Q9. What are the three most important KPIs related to DevOps?

Several KPIs can be used to measure the success of DevOps. 3 of the most common ones include:

  • Mean time to failure recovery
  • Frequency of deployment
  • Percentage of deployments that have failed after implementation

Q10. What are the three types of design patterns?

  • Creational: Used for addressing design problems.
  • Structural: Used for simplifying relationships between objects.
  • Behavioral: Used for simplifying the way objects interact with each other.

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