Advanced Docker concepts are essential for developers and DevOps engineers to master as they delve deeper into containerization. Topics like Docker Swarm, Kubernetes integration, advanced networking, multi-stage builds, and Docker security highlight the true potential of Docker in production environments.
These MCQs help you prepare for high-level interview questions and real-world production scenarios, solidifying your skills in advanced Docker usage.
1.) What is Docker Swarm?
A) Docker’s native clustering and orchestration tool
B) A feature for securing Docker containers
C) A Kubernetes alternative for managing containers
D) A tool for building multi-stage images
2.) What is a multi-stage build in Docker?
A) A process of chaining multiple containers together
B) A method to create multiple images from a single Dockerfile
C) A technique to reduce image size by separating build and runtime stages
D) A strategy for container scaling
3.) Which of the following is NOT an advantage of multi-stage builds?
A) Reduces the final image size
B) Improves build performance
C) Simplifies build pipelines
D) Enables real-time container monitoring
4.) What is the purpose of the docker stack deploy command?
A) To deploy a stack of containers
B) To deploy services in a Docker Swarm cluster
C) To create a multi-stage Dockerfile
D) To initialize Docker networking
5.) Which feature in Docker provides secure image signing and verification?
A) Docker Security Scanner
B) Content Trust
C) Docker Shield
D) Image Lock
6.) What is the default storage driver for Docker on Linux?
A) OverlayFS
B) AUFS
C) Device Mapper
D) Btrfs
7.) What does the docker secret command manage in a Docker Swarm?
A) Multi-stage build configurations
B) API keys for Kubernetes
C) TLS certificates
D) Encrypted secrets for services
8.) Which command enables experimental features in Docker?
A) docker experimental on
B) docker features enable
C) Add “experimental”: “enabled” to ~/.docker/config.json
D) docker beta activate
9.) What is the purpose of the docker system prune command?
A) To remove unused images, containers, and networks
B) To optimize container resource usage
C) To reset the Docker daemon
D) To clean up unused volumes only
10.) What is the role of docker-compose.override.yml?
A) To override the default Compose configuration
B) To define advanced networking rules
C) To manage Docker security policies
D) To configure Docker secrets
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