XK0-005 Question #1411: Real Exam Question with Answer & Explanation

Question

A Linux administrator found many containers in an exited state. Which of the following commands will allow the administrator to clean up the containers in an exited state?

Options

• Adocker rm --all
• Bdocker rm $(docker ps -aq)
• Cdocker images prune *
• Ddocker rm --state exited

Explanation

{"question_number": 10, "question": "A Linux administrator found many containers in an exited state. Which of the following commands will allow the administrator to clean up the containers in an exited state?", "correct_answer": "B", "correct_answer_text": "docker rm $(docker ps -aq)", "explanation": "docker rm $(docker ps -aq) uses command substitution: docker ps -aq returns the IDs of all containers (both running and exited) using -a (all) and -q (quiet/IDs only), and docker rm removes them. Among the options given, this is the only syntactically valid command that actually removes containers. docker rm --all (option A) is not a valid Docker flag---all does not exist for docker rm. docker images prune * (option C) is incorrect syntax; the valid command is docker image prune (no wildcard), and it removes unused images, not containers. docker rm --state exited (option D) is not a valid Docker command; --state is not a recognized flag for docker rm.", "generated_by": "claude-sonnet", "llm_judge_score": 3}

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