DCA Container Practice Questions
The free DCA: Docker Certified Associate (DCA) questions that deal with container, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #8
Which one of the following commands will result in the volume being removed automatically once the container has exited?
Correct answer: C
Explanation
The --rm flag removes the container and its anonymous volumes automatically once it exits. --del, --remove and --read-only are not flags that clean up on exit.
Question #10
Which of the following is true about using the '-P' option when creating a new container?
Type your answer, then reveal.
Correct answer: AExplanationControllare
Explanation
The -P flag publishes every exposed container port to a randomly chosen ephemeral port on the host, on all host interfaces. Naming a specific host interface requires explicit -p bindings, and -P grants no extra privileges.
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