Most DevOps interviews test six core areas: Linux and networking basics, Git and branching strategies, CI/CD pipeline design, containers (Docker and Kubernetes), infrastructure as code with Terraform, and one cloud platform — AWS in most Indian companies. Expect questions like "what is CI/CD", "difference between Docker and a virtual machine", "how does Terraform work", and "how do you roll back a bad deployment". Strong answers always connect the concept to something you have actually built or debugged, not textbook definitions.

Most DevOps interview questions and answers for freshers revolve around fundamentals: what DevOps actually means, basic Linux commands, Git operations, a simple CI/CD explanation, Docker images vs containers, and entry-level AWS services like EC2 and S3. Interviewers rarely expect deep production experience at this stage — they test clarity of concepts and willingness to learn. Build 2–3 mini projects (even lab setups count), be ready to explain them end to end, and rehearse your answers out loud so you sound confident rather than memorised.

At the three-year mark, interviews shift to scenario-based questions: designing a CI/CD pipeline for microservices, troubleshooting a failed Kubernetes deployment, recovering a corrupted Terraform state file, or optimising AWS costs for a growing workload. Interviewers want trade-off thinking — why you chose a tool, what broke, and how you fixed it. Prepare 4–5 detailed stories from your real work, practise drawing architecture diagrams live, and do at least one mock interview before the actual round.

Pick the certification that matches your level (Cloud Practitioner if you are new to cloud), create an account on the AWS Certification portal, prepare for 4–8 weeks using free digital courses and hands-on labs, then book the exam through Pearson VUE at a test centre or online with a proctor. You need roughly 700–750 out of 1000 to pass, and your provisional result appears as soon as you submit. Many candidates in India start with Cloud Practitioner and move to an Associate level within a few months.

Cloud Practitioner is AWS's entry-level foundational certification with no prerequisites, ideal if you come from a support, development, or non-cloud background. The exam is 90 minutes long with around 65 questions covering cloud concepts, security and compliance, technology, and billing and pricing. Four to six weeks of consistent preparation with free AWS training content and practice tests is usually enough, and clearing it gives you the vocabulary and confidence to attempt an Associate certification next.

AWS charges exam fees in USD, and 18% GST is added for candidates in India. The Cloud Practitioner exam is $100 (roughly ₹10,000 with GST), Associate-level exams are $150 (roughly ₹15,000), and Professional and Specialty exams are $300 (roughly ₹29,000), depending on the exchange rate. Retakes cost the same as the first attempt, so preparing properly with hands-on labs and practice tests before the first attempt is the most cost-effective approach.

The exam fee itself cannot be waived — AWS occasionally issues discount vouchers through events and promotions, but there is no standing way to take the AWS certification for free. Preparation, however, can be completely free: AWS Skill Builder offers free digital courses and exam-prep content, the AWS Free Tier lets you practise hands-on without spending, and community study groups share notes and practice questions. Many candidates end up paying only the exam fee by self-preparing this way.

For a DevOps career, the proven sequence is Cloud Practitioner → Solutions Architect Associate (or Developer Associate) → AWS Certified DevOps Engineer – Professional. Solutions Architect Associate builds the broadest cloud foundation, Developer Associate suits automation-heavy roles, and the DevOps Engineer Professional ties everything together with CI/CD, infrastructure as code, and monitoring at scale. Whichever route you choose, pair the certification with real Terraform, Docker, and pipeline experience, because DevOps interviews test hands-on depth more than certificates.

AWS certifications are grouped into four levels. Foundational: Cloud Practitioner. Associate: Solutions Architect, Developer, SysOps Administrator, and Data Engineer. Professional: Solutions Architect Professional and DevOps Engineer Professional. Specialty: Advanced Networking, Security, Machine Learning, Database, and SAP on AWS. AWS occasionally adds or retires exams, so confirm the current line-up on the official certification page before planning your path.

It is a proctored, multiple-choice test (with some multiple-response questions) taken either at a Pearson VUE test centre or online from home. Duration depends on the level — about 90 minutes for Cloud Practitioner, 130 for Associate, and 180 for Professional — with scores scaled from 100 to 1000 and a passing mark that varies slightly by exam but usually sits in the 700–750 range. Your provisional result appears on screen right after submission, and the certificate is issued to your AWS account within a few working days.

No — there is no fixed AWS certification exam schedule. Exams run year-round, and you simply book a slot that suits you at a Pearson VUE test centre or as an online-proctored exam from home, with slots available across India including weekends. You can reschedule in advance if your preparation is not complete, though last-minute changes can attract a fee, so book the date based on your readiness rather than the calendar.

Terraform is an infrastructure-as-code tool that lets you define cloud resources — servers, networks, databases, load balancers — in configuration files instead of clicking through the console. You write the desired state in HashiCorp Configuration Language, run terraform plan to preview exactly what will change, and terraform apply to create or update real AWS resources, while a state file tracks everything Terraform manages. Teams use it to spin up identical environments repeatedly, review infrastructure changes like code in pull requests, and eliminate manual setup drift.

Begin with a hands-on Terraform tutorial for beginners rather than pure theory — install the Terraform CLI, connect it to an AWS free-tier account, and create your first resources like an S3 bucket or an EC2 instance from code. Once plan, apply, and state make sense, move on to variables, outputs, remote state on S3, and modules, then rebuild a small project you already know (a two-tier web app works well) entirely in Terraform. Two to three weeks of daily practice is usually enough to become productive, and working on real AWS resources teaches faster than any tutorial series.