Docker Dockerfile and Docker Compose 2020 Ready - Understanding Data Persistence in Named-Volumes and Data-Sharing in Co

This video tutorial explains the use of named volumes in Docker for data persistence and sharing data across containers. It covers creating and managing volumes, mounting them in containers, and sharing data between containers. The tutorial also highlights the importance of understanding file locking when sharing data. Finally, it introduces the topic of Docker networks, which will be covered in the next section.

What is one of the primary uses of named volumes in Docker?

• To increase the speed of container deployment

• To enable data persistence across container restarts

• To reduce the size of Docker images

• To improve network security

In a Docker Compose file, where should volumes be defined?

• Inside the service definition

• In a separate configuration file

• At the same level as services

• At the top of the file

What command is used to create a named volume manually in Docker?

• docker volume init

• docker volume create

• docker volume start

• docker volume new

How can you mount a named volume into a Docker container?

• Using the --volume option

• Using the -v option

• Using the --mount option

• Using the --bind option

What is a key consideration when sharing data between containers using named volumes?

• Using the same image for both containers

• Ensuring both containers have the same environment variables

• Handling data changes without file locking

• Ensuring both containers are on the same network

What happens to the data in a named volume when a container is removed?

• The data is deleted

• The data is transferred to another container

• The data is archived

• The data remains intact

What is the purpose of using named volumes in Docker?

• To enhance container security

• To improve container networking

• To manage container logs

• To persist data independently of containers