XK0-005 · Question #761
XK0-005 Question #761: Real Exam Question with Answer & Explanation
The correct answer is D: mkdir CompTIA_doc && cd CompTIA_doc. {"question_number": 4, "correct_answer": "D", "explanation": "The '&&' operator executes the second command only if the first command exits successfully (exit code 0). Using 'mkdir CompTIA_doc && cd CompTIA_doc' ensures the directory is created before attempting to change into it
Question
A Linux administrator is creating a directory called CompTIA_doc, and it needs to switch to another location to perform some system-related tasks. Which of the following commands should the administrator use for this task?
Options
- Amkdir CompTIA_doc & cd CompTIA_doc
- Bmkdir CompTIA_doc + cd CompTIA_doc
- Cmkdir CompTIA_doc || cd CompTIA_doc
- Dmkdir CompTIA_doc && cd CompTIA_doc
Explanation
{"question_number": 4, "correct_answer": "D", "explanation": "The '&&' operator executes the second command only if the first command exits successfully (exit code 0). Using 'mkdir CompTIA_doc && cd CompTIA_doc' ensures the directory is created before attempting to change into it - if mkdir fails (e.g., directory already exists with error), cd is never attempted. A single '&' runs the first command in the background and immediately starts the second, which would fail because the directory may not exist yet. '+' is not a valid shell operator. '||' is a logical OR, running the second command only if the first fails - the opposite of the intended behavior.", "generated_by": "claude-sonnet", "llm_judge_score": 4}
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