Containers (2013) Quiz

Exam-prep questions for the Containers (2013) track of the Terminal Academy. Run containers for real: pull images, publish ports, read logs, mount volumes, write a Dockerfile, wire services together with Compose.

This category currently has 60 questions in the SERVBG quiz bank. Below are a few sample questions: the full interactive quiz shuffles through the whole set with instant scoring.

Sample questions

What is a Docker image made up of, structurally?

A text file listing package names to install at runtime
A stack of read-only, content-addressed filesystem layers plus metadata
A live filesystem snapshot taken from a running container
A virtual machine disk image with a full kernel
A single compressed archive with no internal structure

Which command downloads an image from a registry without running it?

docker download <image>
docker pull <image>
docker fetch <image>
docker install <image>
docker get <image>

If you run `docker pull redis` with no tag specified, which tag does Docker use?

current
main
latest
stable
default

What does `docker images` list?

Every image ever published to Docker Hub
The Dockerfiles present in the working directory
Only images that are currently running as containers
The images currently stored on the local machine
Remote images available in a configured registry

In `docker pull postgres:15`, what does the `15` after the colon specify?

The size limit of the image in megabytes
The number of build steps in the Dockerfile
The tag, identifying a specific image version
The port the container will listen on
The number of layers in the image

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Continue the Containers (2013) track

Containers (2013) trains for the Terminal Academy’s Containers (2013) era.

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