Docker Interview Questions

Introduction

In this blog post, we will explore a comprehensive list of Docker interview questions, ranging from basic to advanced. Whether you are a beginner or an experienced Docker user, these questions will help you prepare for your next Docker interview. Let’s dive in!

Basic Questions

1. What is Docker?
2. What are the key components of Docker?
3. How does Docker differ from virtualization?
4. What is a Docker image?
5. What is a Docker container?
6. How do you create a Docker image?
7. How do you run a Docker container?
8. What is Docker Hub?
9. How to inspect the architecture of an image built using docker? and how to pull an image with a particular architecture? To identify:

docker pull ubuntu:latest
docker image inspect --format '{{.Architecture}}' ubuntu:latest

To pull

FROM --platform=linux/amd64 ubuntu:latest

Intermediate Questions

1. What is Docker Compose?
2. How do you define services in a Docker Compose file?
3. What is the difference between a Docker image and a Docker container?
4. How do you link containers in Docker?
5. How do you manage data in Docker?
6. What is Docker Swarm?
7. How do you scale Docker services?
8. What is the purpose of a Dockerfile?

Advanced Questions

1. What is Docker networking?
2. How do you secure Docker containers?
3. What is Docker volume?
4. How do you orchestrate containers using Kubernetes?
5. What are the best practices for Docker containerization?
6. How do you monitor Docker containers?
7. What is Docker registry?
8. How do you troubleshoot Docker issues?

Conclusion

These Docker interview questions cover a wide range of topics, from the basics to advanced concepts. By familiarizing yourself with these questions, you will be well-prepared for your Docker interview. Good luck!