Devops Interview Guide - 100+ Q/A

Anoop Kumar — Cloud & DevOps Interview Preparation Guide

This is not a generic question bank. It is a structured, experience based interview preparation guide built from real DevOps interviews, actual project scenarios, and years of mentoring engineers across all levels.

Whether you are a fresher stepping into DevOps or an experienced engineer targeting a senior role, this guide gives you the clarity,depth, and confidence to walk into any Cloud & DevOps interview prepared.

What is inside:

- 112+ real interview questions across 8 sections, drawn from actual industry interviews

- 35 Terraform command references with practical explanations

- 13 live coding tasks in Python, Bash, and Terraform

- 10 AWS scenario-based architecture questions

- Interview tips at the start of every section — what interviewers actually look for

- STAR-method guidance for behavioral and project questions

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Section 1 — Terraform (Q1–Q26)

State locking, remote backends, modules, count vs for_each, depends_on, configuration drift, CI/CD pipelines, immutable infrastructure, and recovery from corrupted state.

Section 2 — Terraform Commands Reference

35 commands covering init, plan, apply, destroy, state management, workspace, validate, format, providers, and import — with clear explanations.

Section 3 — CI/CD & Pipelines (Q27–Q56)

Pipeline design for Java projects, multi-environment deployments, rollback strategies, approval gates, blue-green and canary deployments, Jenkins, GitHub Actions, GitLab CI, secrets management, and versioning.

Section 4 — Security & Best Practices (Q57–Q68)

Secrets in pipelines, IAM roles vs policies, SAML, Zero Trust, cross account access, Docker container security, compliance, and preventing configuration drift.

Section 5 — Docker & Containerization (Q69–Q88)

Dockerfiles, multi-stage builds, CMD vs ENTRYPOINT, image optimisation, resource monitoring, container security, and production-grade best practices.

Section 6 — Projects & Behavioral (Q89–Q108)

STAR-method answers for project walkthroughs, challenges, results, team collaboration, and situational questions that appear in every senior interview.

Section 7 — Linux & Live Coding (Q109–Q112 + 13 Tasks)

Linux fundamentals, live Python tasks (factorial, Fibonacci, duplicates), Bash scripts (CPU monitoring, backups, log finder), and Terraform tasks (EC2, S3, VPC provisioning).

Section 8 — AWS Scenarios (10 Scenarios)

Traffic spike handling, high CPU troubleshooting, multi-region HA design, database migration, S3 security, cross-account access, Lambda optimisation, centralised logging, and disaster recovery.

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Who this is for:

- Freshers starting their DevOps journey

- Professionals transitioning from non-IT or operations backgrounds

- Engineers preparing for mid-level or senior DevOps and Cloud roles

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This guide is built from real project work and real interviews not copied from documentation. It is designed to help you think like a DevOps engineer, answer with confidence and stand out in a competitive market.