Docker Certified Associate Certification Training Course - File System in Containers

The video tutorial explains how data is managed in Docker containers. It covers the concept of writable layers where data is stored temporarily and how committing changes can create additional layers. The role of drivers in managing the file system is discussed, along with the advantages of using volumes for data storage. Volumes are preferred as they do not increase container size and exist outside the container lifecycle, often being associated with the host system.

What happens to the data in a Docker container's writable layer when the container is stopped?

• It is transferred to a new container.

• It is saved permanently.

• It is lost.

• It is automatically backed up.

What is the purpose of committing changes in a Docker container?

• To create a new writable layer.

• To increase the container's memory.

• To delete the container.

• To create an additional layer and make it readonly.

What is the role of a driver in Docker?

• To update Docker software.

• To manage the file system for writable layers.

• To handle user authentication.

• To manage network connections.

Why are volumes preferred over writable layers for data storage in Docker?

• They do not increase the container size.

• They are easier to configure.

• They are more secure.

• They are faster to access.

How are volumes associated in Docker?

• With the container's CPU.

• With the container's network.

• With the container's memory.

• With the host system.