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Top 3 Winners:

Prashant Lakare,  Eshan Chattaraj and  Manoj Jadhav

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Quiz Questions and answers are as below:

1. What is Docker mainly used for?

• Virtualization

• Containerization

• CI/CD pipelines

• Monitoring

✔ Correct Answer: Containerization

2. Which command builds a Docker image from a Dockerfile?

• docker run

• docker build

• docker create

• docker init

✔ Correct Answer: docker build

3. What does docker ps show?

• Running containers

• Available images

• Stopped containers

• Dockerfiles in the project

✔ Correct Answer: Running containers

4. Which command lists all Docker images available locally?

• docker ps

• docker images

• docker containers

• docker list

✔ Correct Answer: docker images

5. What is the purpose of a Dockerfile?

• Run containers

• Define instructions for building images

• Monitor logs

• Create networks

✔ Correct Answer: Define instructions for building images

6. What does docker run -p 8080:80 myapp do?

• Runs container in background

• Maps host port 8080 to container port 80

• Exposes container on all ports

• Pushes image to registry

✔ Correct Answer: Maps host port 8080 to container port 80

7. What does the EXPOSE 3000 instruction in a Dockerfile mean?

• Start container on port 3000

• Publish logs to port 3000

• Inform Docker the container listens on port 3000

• Force network traffic on port 3000

✔ Correct Answer: Inform Docker the container listens on port 3000

8. What’s the difference between docker image and docker container?

• Images are running, containers are stored

• Images are blueprints, containers are instances

• Containers create images

• No difference

✔ Correct Answer: Images are blueprints, containers are instances

9. Which of these reduces Docker image size?

• Adding all source files

• Using multi-stage builds

• Avoiding .dockerignore

• Running as root

✔ Correct Answer: Using multi-stage builds

10. Which of these is NOT an advantage of Docker?

• Consistent dev environments

• Fast application startup

• Automatic vertical scaling of servers

• Portability across systems

✔ Correct Answer: Automatic vertical scaling of servers

11. What is Amazon ECS?

• AWS’s container orchestration service

• AWS’s VM scaling service

• AWS’s CI/CD tool

• AWS’s AI platform

✔ Correct Answer: AWS’s container orchestration service

12. Which ECS launch type removes the need to manage servers?

• EC2

• Lambda

• Fargate

• Lightsail

✔ Correct Answer: Fargate

13. Where are container images typically stored for ECS?

• S3

• ECR

• RDS

• DynamoDB

✔ Correct Answer: ECR

14. What happens if an ECS service is deployed without the image in ECR?

• ECS builds it automatically

• Deployment fails as image not found

• ECS pulls from Docker Hub by default

• Service runs without container

✔ Correct Answer: Deployment fails as image not found

15. What is the benefit of using AI for DevOps workflows?

• It replaces developers

• It generates documentation only

• It automates and speeds up repetitive tasks

• It deploys servers directly

✔ Correct Answer: It automates and speeds up repetitive tasks