Mphasis Devops Engineer Interview Questions and Answers

Waterfall model is a linear sequential software development process where progress flows in one direction like a waterfall.

• Involves distinct phases such as requirements, design, implementation, testing, and maintenance.

• Each phase must be completed before moving on to the next.

• Changes are difficult to implement once a phase is completed.

• Example: Traditional software development approach.

• Example: Construction projects.

Git rebase is used to reapply commits on top of another base tip. Terraform destroy is used to delete all the resources managed by Terraform.

• Git rebase is used to rewrite commit history by moving, combining, or deleting commits.

• Terraform destroy is used to delete all the resources created by Terraform.

• Git rebase can be used to squash multiple commits into one for cleaner history.

• Terraform destroy should be used with caution as it will delete all resources managed by Terraform...read more

DevOps is a software development methodology that combines software development with IT operations to improve collaboration and efficiency.

• DevOps focuses on automating and streamlining the software development process.

• It emphasizes communication and collaboration between development and operations teams.

• Some popular DevOps tools include Jenkins, Docker, Kubernetes, Ansible, and Git.

• These tools help in continuous integration, continuous delivery, infrastructure as code, and mo...read more

Agile methodology is a project management approach that emphasizes flexibility, collaboration, and incremental progress.

• Agile focuses on delivering small, incremental releases and adapting to change quickly.

• It promotes collaboration between cross-functional teams and encourages frequent communication.

• Key principles include customer satisfaction, responding to change, and delivering working software.

• Common agile frameworks include Scrum, Kanban, and Extreme Programming (XP).

CICD setups involve integrating various tools for automation and continuous delivery.

• Use Jenkins for building, testing, and deploying code

• Integrate with version control systems like Git for source code management

• Utilize Docker for containerization and Kubernetes for orchestration

• Implement monitoring tools like Prometheus and Grafana for tracking performance

• Automate testing with tools like Selenium or JUnit

AWS S3 offers various storage classes to optimize cost and performance based on data access patterns.

• S3 Standard: General-purpose storage for frequently accessed data.

• S3 Intelligent-Tiering: Automatically moves data between two access tiers based on changing access patterns.

• S3 Standard-IA: Infrequent access storage for data that is less frequently accessed but requires rapid access when needed.

• S3 One Zone-IA: Lower-cost option for infrequently accessed data that does not requ...read more

Troubleshooting with EKS involves identifying and resolving issues within an Amazon EKS cluster.

• Check the status of EKS nodes and pods

• Review logs for errors and warnings

• Verify network connectivity within the cluster

• Monitor resource utilization to identify bottlenecks

• Use kubectl commands to inspect and troubleshoot