Docker - Volumes - multichoice questions

Question 1

What is wrong in the following command:

docker run -it -v ../../etc/resolv.conf:/etc/resolv.conf busybox /bin/sh

• There is no such image busybox.
• The file /etc/resolv.conf doesn't exist in the container.
• Relative path is not allowed in the first part of -v value.
• The flag --name is missing.

Question 2

If you use -v to bind-mount a file or directory that does not yet exist on the host machine.

• -v creates the endpoint for you. It is always creates as a directory.
• -v doesn't create the endpoint for you.
• -v creates either the file or directory endpoint for you.
• The docker daemon exits with an Error: Path not found.

Question 3

Given the below container running command:

docker run -v /home/elvis/data:/data mysql

• /home/elvis/data is a path in the host machine.
• /home/elvis/data is a path in the container.
• /data is a path in the container.
• /data is a path in the host machine.

Question 4

Given the below running container command executed by elvis:

[elvis@hostname]$ docker run -it -v /test_data:/test_data busybox /bin/sh

Assume the command touch /test_data/hi was successfully executed from within the container. When running ls -l /test_data from the host machine, who are the user and group owners of the created hi file?

• elvis
• dockerd
• root
• Since this file was created from within a container in the host machine fs, there is no user and group owning the file.
• None of the above.

Question 5

You want to mount the path /etc/resolv.conf from your host machine into the container file system. So the container will share the content of /etc/resolv.conf as it's defined in the host machine.

Which method will work?

• Using bind-mount.
• Using volumes.
• Both volumes and bind-mount will work.
• tmpfs mounts