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Technical questions for DevOps and platform engineering roles covering CI/CD, infrastructure, and observability.
6 questions with expert tips
Practice with AI →Explain the difference between a Deployment and a StatefulSet in Kubernetes. Give a real use case for each.
Expert Tip
Deployment: stateless apps, pods are interchangeable. StatefulSet: databases, stable network identity, ordered pod creation.
Design a deployment pipeline for a microservices application that needs zero-downtime deployments.
Expert Tip
Blue-green or canary deployment, rolling updates, health checks, automated rollback on failure, smoke tests.
How do you manage secrets in a Kubernetes cluster used by multiple teams?
Expert Tip
External Secrets Operator with Vault/AWS SSM, RBAC namespacing, never store in ConfigMap, rotate regularly.
Your service's p99 latency spiked to 5s at 2am. How do you debug it?
Expert Tip
Check Grafana dashboards for resource saturation, distributed traces (Jaeger/Tempo), logs correlation, upstream dependencies.
How do you manage Terraform state for a team of 10 engineers working on the same infrastructure?
Expert Tip
Remote state in S3/GCS with DynamoDB locking, workspace-based environments, state file encryption, PR reviews for plan output.
How do you implement disaster recovery for a critical service with an RTO of 15 minutes?
Expert Tip
Multi-region active-passive, database replication (Aurora Global DB), automated failover, runbook automation, regular DR drills.
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