Interview practice by role
DevOps Engineer Interview Practice
DevOps interviews test how you ship and run software safely. Expect questions on containers, pipelines, infrastructure as code and what you do when production breaks.
240 practice questions6 topics5 typical rounds
How the interview usually runs
Loops differ by company. Treat this as a common pattern, not a fixed format.
- 01Screening callYour tooling, the environments you managed and your on-call experience.
- 02Linux and networking fundamentalsProcesses, permissions, DNS, ports and troubleshooting a misbehaving server.
- 03Containers and orchestrationImages, networking, Kubernetes objects, scaling and rolling updates.
- 04Pipelines and infrastructure as codeCI/CD design, Terraform state, environments and promoting a release.
- 05Incident and behavioural roundA production incident you handled, the postmortem and what changed afterwards.
What interviewers probe
- Debugging a failing deployment step by step
- How you roll out and roll back a release safely
- Terraform state, drift and how teams avoid collisions
- Kubernetes scheduling, health checks and resource limits
- Monitoring and alerting that reduce noise
Common mistakes
- Listing tools without explaining why you chose them
- Having no rollback plan when describing a deployment
- Describing an outage without naming your own role and the fix
Practice questions for DevOps Engineer interviews
A starting set from each topic. Every question has a short answer, the full reasoning and the follow-ups interviewers ask.
01Explain the Docker architecture and its main components.Mediumarchitecture · daemon · containerd02How do image layers and build caching work?Mediumlayers · caching · build03What are multi-stage builds and when do you use them?Mediummulti-stage · image-size · build04How is a Kubernetes cluster architected?Mediumarchitecture · control-plane · nodes05What runs in the control plane and why does it matter?Mediumcontrol-plane · etcd · scheduler06When do you need a StatefulSet?Mediumstatefulsets · stateful · storage07How does Terraform compare with CloudFormation?Mediumcloudformation · aws · tooling08What are data sources and when should you use them?Mediumdata sources · lookups · planning09What is Terraform state and why is it needed?Mediumstate · mapping · operations10What is the difference between continuous delivery and continuous deployment?Mediumcontinuous delivery · continuous deployment · release11What is a build artifact and why should you build once?Mediumartifacts · immutability · reproducibility12How do you choose a version control branching strategy?Mediumbranching · git · release management13How do Linux file permissions work?Mediumpermissions · chmod · security14How do chmod and chown work, and what are the risks?Mediumchmod · chown · permissions15How do process signals work, and when do you use which?Mediumsignals · sigterm · sigkill16How does cloud IAM work?Mediumiam · authorization · security17How do you apply least privilege in the cloud?Mediumleast privilege · iam · security18How do virtual networks work?Mediumvpc · networking · cidr
Reading is step one
Now say it out loud.
Understanding an answer and delivering it under pressure are different skills. Rehearse this topic in a live DevOps Engineer mock interview and get scored feedback on depth, clarity and confidence.