Docker and Containers

What is Docker?

• An open-source platform for building and running containers

• A virtualization software for running virtual machines

• A programming language for web development

• An operating system for cloud computing

What is the primary benefit of using containers?

• They virtualize the entire hardware stack

• They share the host machine's kernel

• They require a hypervisor for management

• They have slower performance compared to virtual machines

1. What is the purpose of a Dockerfile?

• 1. To manage Docker containers

• 1. To define the commands for building a Docker image

• 1. To deploy Docker images to production servers

• 1. To monitor Docker containers in real-time

Which Docker command is used to list running containers?

• docker ps

• docker images

• docker run

• docker stop

What is Docker Compose used for?

• Managing Docker containers

• Building Docker images

• Defining multi-container applications

• Running Docker commands in a container

What does the docker pull command do?

• Starts a Docker container

• Lists available Docker images

• Removes a Docker image

• Downloads a Docker image from a registry

How does Docker differ from traditional virtualization?

• Docker virtualizes the entire hardware stack

• Docker requires a hypervisor for management

• Docker provides slower performance compared to virtual machines

• Docker containers share the host machine's kernel

What is the purpose of tagging Docker images?

• To optimize the performance of Docker containers

• To categorize images based on their content

• To specify the base image for Dockerfile

• To identify and version Docker images

Which Docker command is used to build a Docker image from a Dockerfile?

• docker start

• docker push

• docker build

• docker pull

Which of the following statements about Docker images is true?

• Docker images are static and cannot be modified

• Docker images are lightweight, standalone packages that contain all dependencies

• Docker images are heavy and resource-intensive

• Docker images contain only the application code