XK0-006 Automation, Orchestration, and Scripting Practice Question

A user wants to execute a command inside a running Docker container named 'db'. Which command should be used?

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

✓

docker exec -it db bash

docker exec is used to run a command in an existing running container.

Answer analysis

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

✗
docker attach db
Why it's wrong here
docker attach attaches to the container's main process, not suitable for running arbitrary commands.
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docker start -i db
Why it's wrong here
docker start starts a stopped container; -i provides interactive access but not for running arbitrary commands.
✗
docker run -it db bash
Why it's wrong here
docker run creates a new container, not executes inside an existing one.
✓
docker exec -it db bash
Why this is correct
Correct. docker exec runs a command in a running container.

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