Extio Technology and Consulting LLP Devops Engineer Interview Questions and Answers

Implementing redundancy, automation, and monitoring ensures high availability and scalability in CI/CD pipelines.

• Use load balancers to distribute traffic across multiple CI/CD servers, ensuring no single point of failure.

• Implement container orchestration tools like Kubernetes to manage scaling and availability of CI/CD components.

• Utilize cloud services (e.g., AWS CodePipeline, Azure DevOps) that offer built-in high ava...read more

CI (Continuous Integration) and CD (Continuous Delivery/Deployment) are practices that automate software development and release processes.

• CI involves automatically testing and integrating code changes into a shared repository.

• CD ensures that code changes are automatically deployed to production or staging environments.

• Examples of CI tools include Jenkins, Travis CI, and CircleCI.

• Examples of CD tools include Spinnaker,...read more

CI/CD stands for Continuous Integration and Continuous Deployment, streamlining software development and delivery processes.

• CI involves automatically testing and integrating code changes into a shared repository, e.g., using Jenkins or GitLab CI.

• CD automates the deployment of code to production, ensuring that new features are released quickly and reliably.

• Implemented CI/CD pipelines using tools like CircleCI, where cod...read more

Docker uses containers for lightweight virtualization, while VMs use hypervisors for full OS virtualization.

• Docker containers share the host OS kernel, making them lightweight and fast.

• Virtual Machines (VMs) run a full OS, including its own kernel, which consumes more resources.

• Docker starts in seconds, while VMs can take minutes to boot up.

• Containers are portable and can run consistently across different environments,...read more

Cloud refers to on-demand computing resources and services delivered over the internet, enabling scalability and flexibility.

• Cloud computing offers three main service models: IaaS (e.g., AWS EC2), PaaS (e.g., Google App Engine), and SaaS (e.g., Microsoft 365).

• It provides scalability, allowing businesses to easily adjust resources based on demand.

• Cloud services can be public (e.g., AWS, Azure), private (dedicated infras...read more

A pipeline automates the software delivery process, while a server hosts applications and services.

• A pipeline consists of stages like build, test, and deploy, ensuring continuous integration and delivery.

• Example: A CI/CD pipeline using Jenkins to automate testing and deployment of a web application.

• A server is a physical or virtual machine that provides resources, data, services, or programs to other computers.

• Example:...read more

CI focuses on code integration, CD on delivery readiness, and Continuous Deployment automates release to production.

• Continuous Integration (CI): Automates code integration into a shared repository, ensuring early detection of issues. Example: Jenkins, Travis CI.

• Continuous Delivery (CD): Ensures code is always in a deployable state, allowing for manual release to production. Example: GitLab CI/CD.

• Continuous Deployment: ...read more

I keep myself updated by attending conferences, reading blogs, and taking online courses.

• Attend conferences and workshops to learn from experts

• Read blogs and articles to stay updated on latest trends

• Take online courses and tutorials to gain practical knowledge

• Experiment with new technology by building projects

• Collaborate with peers to learn from their experiences