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Infrastructure Interview Questions — What Senior Engineers Need to Know

Infrastructure knowledge is increasingly expected of senior backend engineers, not just DevOps specialists. Interviewers want to know that you understand containerization, orchestration trade-offs, and how to design deployment pipelines that don’t cause outages.

These 8 questions cover the infrastructure concepts most relevant to senior interviews: Docker internals, Kubernetes architecture, CI/CD best practices, and cloud-native design patterns. Understanding these helps you bridge the gap between writing code and running it reliably in production.

All 8 Questions

K8s — Pod vs DeploymentWhat is the difference between a Kubernetes Pod and a Deployment?K8s — Liveness vs ReadinessWhat is the difference between liveness and readiness probes in K8s?K8s — ConfigMap vs SecretWhat is the difference between a ConfigMap and a Secret in K8s?Helm ChartWhat is a Helm chart and why would you use one?Docker — Container vs VMWhat is the difference between a Docker container and a VM?CI/CD PipelineWhat are the stages of a CI/CD pipeline?Logging & MonitoringWhat are best practices for logging and monitoring in production?Alerting SystemsHow do you design an effective alerting system?

How to Prepare

Focus on understanding concepts deeply enough to explain them in your own words. For each topic, practice articulating the trade-offs and real-world applications — interviewers care about practical judgment, not textbook definitions.

Related Topics

  • System Design Interview Questions
  • Distributed Systems Interview Questions
  • Security Interview Questions

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