Docker for the Absolute Beginner - Hands-On - Docker Storage

This video tutorial covers advanced Docker concepts, focusing on storage, drivers, and file systems. It explains how Docker stores data using a layered architecture, which allows for efficient image building and data management. The tutorial also discusses writable layers, the copy-on-write mechanism, and how to persist data using volume and bind mounting. Finally, it introduces storage drivers and their role in maintaining Docker's layered architecture.

Where does Docker store its data by default?

• /usr/local/docker

• /var/lib/docker

• /etc/docker

• /home/docker

What is the primary advantage of Docker's layered architecture?

• It makes images more secure.

• It allows for faster image builds and saves disk space.

• It increases the size of images.

• It simplifies the Dockerfile syntax.

What happens to the writable layer when a Docker container is destroyed?

• It is saved for future use.

• It is backed up automatically.

• It is converted to a read-only layer.

• It is deleted along with the container.

What mechanism does Docker use to allow modifications to files in a container?

• Layered write

• Snapshot write

• Copy-on-write

• Direct write

How can you persist data created by a Docker container?

• By using a temporary file

• By using a writable layer

• By using a read-only layer

• By using a persistent volume

What is the difference between volume mounting and bind mounting in Docker?

• Volume mounting uses a specific directory, while bind mounting uses any directory on the host.

• Bind mounting is faster than volume mounting.

• Volume mounting is only available on Linux.

• Bind mounting requires a special Docker plugin.

Which command is used to create a Docker volume?

• docker volume create

• docker new volume

• docker volume new

• docker create volume

What is the role of Docker storage drivers?

• To enable the layered architecture and manage file operations

• To optimize CPU usage

• To manage network connections

• To handle user authentication

Which storage driver is the default for Ubuntu?

• btrfs

• aufs

• device mapper

• overlay

What should you consider when choosing a Docker storage driver?

• The version of Docker

• The number of Docker containers

• The operating system and application needs

• The color of the Docker logo