Which of the following tasks can Docker Cloud perform?
- Create nodes
- None of these
- Start and stop services
- All of these (Ans)
- Create stacks
What is the role of Docker images?
- Provides virtualization functionality across environments
- Used to execute code at runtime
- Acts as a blueprint or template that is used to create containers (Ans)
- All of these
Which of the following options can be used in a Docker Compose file?
- env_file
- All of these (Ans)
- container_name
- networks
Environment variables can be defined in Docker Compose files.
- False
- True (Ans)
How do you show all containers on a machine?
- docker rmi -p
- docker showAllContainers -a
- docker ps -a (Ans)
- docker-machine ps -a
What syntax can be used to create a volume that “hooks” to a source code folder on your machine?
- docker run -v $(pwd):/app imageName (Ans)
- docker run -vol /var/temp imageName
- None of these
- docker run -v /var/www imageName
What Docker command can be used to view information about a custom network?
- None of these
- docker network inspect (Ans)
- docker network view
- docker view network
What syntax can be used to publish an image to Docker Hub?
- docker create /imageName
- docker publish /imageName
- docker move /imageName
- docker push /imageName (Ans)
What benefits do container networks offer?
- Allow containers to communicate with each other in an isolated network (Ans)
- Allow local containers to communicate with external host containers
- Allow local containers to communicate directly with host processes
- All of these
What tool can be used to visually work with images and containers?
- None of these
- VirtualBox
- Docker Engine
- Docker Kitematic (Ans)
What cloud provider does Docker Compose support?
- Amazon Web Services
- All of these (Ans)
- Digital Ocean
- Microsoft Azure
What command-line switch can be used to define a custom Dockerfile file name (such as node.dockerfile) when building a custom image?
- -t
- -customfile
- -f (Ans)
- -v
Which of the following tasks can Docker Compose perform?
- Start and stop containers
- View service logs
- None of these
- All of these (Ans)
- Build services
What command can be used to start a container?
- docker rm [image name]
- docker ps -a
- docker run [image name] (Ans)
- docker go [image name]
Docker Cloud YAML files are identical to Docker Compose YAML files.
- False (Ans)
- True
What Docker Client command can be used to create a container network?
- docker network create (Ans)
- docker build network
- docker createNetwork
- docker ps network
Key benefits of Docker for web developers includes:
- Setup a development environment quickly
- All of these (Ans)
- Simplify working with multiple framework versions
- Consistency between environments
- Ship code faster
A Docker _ has a “thin R/W layer.”
- Image
- File
- None of these
- Container (Ans)
What Docker technologies are available to support communication between containers?
- Docker connect and alias networks
- None of these
- Docker linking and bridge networks (Ans)
- Docker connect and bridge networks
What Docker Compose command can be used to start multiple service containers?
- None of these
- docker-compose start
- docker-compose up (Ans)
- docker run
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