200-901 Application Deployment and Security Practice Question

A developer runs the command: docker run -d -p 8080:80 --name web nginx. Which of the following best describes what happens?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The container runs in detached mode, and host port 8080 is mapped to container port 80.

-d runs container detached, -p maps host port 8080 to container port 80, --name assigns name 'web', and nginx is the image.

Answer analysis

For each option: why learners choose it and why it is or isn't the right answer here.

✗
The container runs in interactive mode, and port 8080 is exposed but not published.
Why it's wrong here
Interactive mode requires -it; -p publishes.
✗
The container is removed after stopping, and port mapping is automatic.
Why it's wrong here
No --rm flag; removal not automatic.
✗
The container runs in the foreground, and port 80 on the host is mapped to port 8080 in the container.
Why it's wrong here
-d runs in background, and mapping is host:container.
✓
The container runs in detached mode, and host port 8080 is mapped to container port 80.
Why this is correct
Correct interpretation of flags.

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