Quick Answer
The answer is RAID 1, as it is the storage configuration that provides redundancy by mirroring data across multiple drives. In a RAID 1 array, identical data is written simultaneously to two or more drives, so if one drive fails, the system continues operating seamlessly using the remaining drive(s), ensuring no data loss. On the CompTIA ITF+ FC0-U61 exam, this concept tests your understanding of fault tolerance versus backup; a common trap is confusing RAID 1 with RAID 0, which stripes data for performance but offers zero redundancy. Remember, mirroring means duplication—if you picture a mirror reflecting the same image, you’ll recall that RAID 1 keeps an exact copy of your data on another drive. For the exam, think “mirror equals safety,” and you’ll always pick RAID 1 when the goal is to survive a single drive failure.
This FC0-U61 practice question tests your understanding of it concepts and terminology. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A user wants to ensure data is not lost in the event of a drive failure. Which storage configuration provides redundancy?
RAID 1
RAID 1 mirrors data across two or more drives, so data remains intact if one drive fails.
JBOD
Why wrong: JBOD (Just a Bunch of Disks) spans data across disks without redundancy.
RAID 0
Why wrong: RAID 0 stripes data for performance but offers no redundancy; failure of one drive loses all data.
Single drive
Why wrong: A single drive has no redundancy; failure results in complete data loss.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
RAID 1
RAID 1 (mirroring) writes identical data to two or more drives simultaneously, so if one drive fails, the data remains accessible from the other drive(s). This provides fault tolerance and ensures no data loss during a single drive failure, meeting the user's requirement for redundancy.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
RAID 1
Why this is correct
RAID 1 mirrors data across two or more drives, so data remains intact if one drive fails.
Related concept
Read the scenario before looking for a memorised answer.
JBOD
Why it's wrong here
JBOD (Just a Bunch of Disks) spans data across disks without redundancy.
RAID 0
Why it's wrong here
RAID 0 stripes data for performance but offers no redundancy; failure of one drive loses all data.
Single drive
Why it's wrong here
A single drive has no redundancy; failure results in complete data loss.
Common exam traps
The trap here is that candidates often confuse RAID 0 (striping for performance) with providing redundancy, or they think JBOD offers some form of protection because it combines drives, but neither provides fault tolerance.
Detailed technical explanation
Under the hood, RAID 1 can be implemented via hardware RAID controllers or software RAID (e.g., mdadm on Linux). In a two-drive RAID 1, each read operation can be serviced by either drive, potentially improving read performance, but write performance is limited by the slower drive. A real-world scenario: in a critical database server, RAID 1 ensures uptime during a hot-swap of a failed drive, whereas RAID 0 would require a full restore from backup.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the FC0-U61 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
IT Concepts and Terminology — This question tests IT Concepts and Terminology — Read the scenario before looking for a memorised answer..
The correct answer is: RAID 1 — RAID 1 (mirroring) writes identical data to two or more drives simultaneously, so if one drive fails, the data remains accessible from the other drive(s). This provides fault tolerance and ensures no data loss during a single drive failure, meeting the user's requirement for redundancy.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This FC0-U61 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U61 exam.
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