Docker Test 1

Question 1

To connect a container to a network, select the docker command.

Accepted Answer

docker network connect

Answer

Explanation:
You can connect external content to the network using the network name with the command $ docker network connect network name> container name>. To see the containers having network access, simply run the command.

Question 2

Which Dockerfile command should you use to make modifications to your Image and, as a result, the Containers that are launched from it?

Accepted Answer

RUN

Answer

Explanation:
RUN — Specify commands to modify your Image and, as a result, the Containers created from it. This includes things like updating packages, installing software, adding users, setting up a database, and so on. These are the commands you'd use to install and configure your program from the command line.

Question 3

In Docker, what is a standardized, enclosed environment for running applications?

Accepted Answer

Docker container

Answer

Explanation:
A Docker Container is a contained, standardized environment for running applications. The Docker API or CLI are used to manage containers. A Docker image is a container-building template that is read-only.

Question 4

Docker uses which file system to supply the building blocks for containers?

Accepted Answer

None of the above

Answer

Explanation:
Union file systems are used by Docker to supply the building blocks for containers. AUFS, btrfs, vfs, and DeviceMapper are all union file system types that Docker can use.

Question 5

In Docker, which of the following has native clustering functionality?

Accepted Answer

Docker Swarm

Answer

Explanation:
A Docker Swarm is a collection of physical or virtual machines that have been configured to join together in a cluster and run the Docker application. You can still run the Docker commands you're used to once a set of machines has been clustered together, but they'll be handled by the machines in your cluster.

Docker Practice Test

Docker Practice Test

Docker Test 1