90 interview questions for developers (2025)

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90 interview questionsfor developers (2025)

Test your developer skills before an interview with 90 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

90 interview questionsfor developers (2025)

Test your developer skills before an interview with 90 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

List the different types of networks that can be created with Docker

What is the main advantage of multi-stage builds in a Dockerfile?

Connect an existing container to a Docker network

Find the errors in the `docker-compose.yml` file.

Which file takes precedence if services or options are redefined in several files?

List all Docker images on your system

List all Docker volumes on a machine

Redirect a specific host port to a container port in Docker

Explain why it is advisable to minimize the number of layers when creating a Docker image.

List all running containers with Docker

What is the main use of Docker Compose?

View the layer history of a Docker image

What is the purpose of the `docker image prune` command?

Create a Docker volume

Which instruction in a `Dockerfile` defines the user who will execute the following commands?

Why should you avoid running a container's main process as root?

What are the `-it` options used for when running a Docker container with `docker run`?

Is it possible to specify a maximum number of restart attempts with the `on-failure` policy?

Connect a service to a network in Docker Compose

What is the image of the `web` service using `docker-compose -f docker-compose.dev.yml up`?