220-1101 Question #251: Real Exam Question with Answer & Explanation

Question

A drive failed on a server that was leveraging a RAID disk configuration. The server administrator would like to rebuild the array so it can withstand a potential multidrive failure in the future. Which of the following RAID configurations will the administrator MOST likely select?

Options

• A0
• B1
• C5
• D10

Explanation

{"question_number": 3, "question": "A drive failed on a server that was leveraging a RAID disk configuration. The server administrator would like to rebuild the array so it can withstand a potential multidrive failure in the future. Which of the following RAID configurations will the administrator MOST likely select?", "correct_answer": "D", "explanation": "RAID 10 (also written RAID 1+0) combines mirroring and striping. Drives are mirrored in pairs, and those pairs are then striped. This means the array can survive the failure of one drive in each mirrored pair simultaneously - true multi-drive fault tolerance. RAID 0 offers no redundancy at all. RAID 1 mirrors two drives but is limited to two drives total. RAID 5 uses distributed parity and can only tolerate a single drive failure before data is at risk. RAID 10 is the go-to choice when both performance and multi-drive fault tolerance are required.", "generated_by": "claude-sonnet", "llm_judge_score": 2}

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