CompTIA Cloud+ Practice Test

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Prepare for the CompTIA Cloud+ Test. Utilize flashcards and multiple choice questions, with hints and explanations for each question. Ensure your readiness for success in this certification exam.

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Which type of RAID offers mirroring for fault tolerance?

RAID 0
RAID 1
RAID 5
RAID 10

The correct answer is: RAID 1

The choice that offers mirroring for fault tolerance is indeed RAID 1. This RAID level duplicates data across two or more disks, creating an exact copy (or mirror) of the data on one disk to another. In the event that one of the disks fails, the system can continue to operate using the remaining disk(s) that contain the mirrored data, ensuring no data loss occurs. This approach enhances data reliability and availability, making RAID 1 a popular choice for critical applications where data integrity is essential. While other RAID levels like RAID 5 and RAID 10 also provide fault tolerance, their methods differ. RAID 5 uses parity for data protection, which offers a balanced solution between performance and redundancy but does not involve true mirroring. RAID 10 combines mirroring and striping, providing both advantages but requiring a minimum of four disks. RAID 0, on the other hand, does not offer any fault tolerance as it stripes data across multiple disks without any redundancy. Therefore, RAID 1 stands out specifically for its straightforward mirroring technique aimed at ensuring data integrity and availability.