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Raid configurations of the disks are used to provide

  1. Fault-tolerance 

  2. High speed

  3. High data density

  4. (A) & (B)

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RAID 0 actually increases the chances of information loss. It decreases fault tolerance. Raid 0 is used for an increased access speed.

All other versions of RAID(Redundant Array of Independent Discs) are primarily focussed on fault tolerance by replicating the data.

 

Hence, Option D

But out of A and B, A is more appropriate.

 

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a) FAULT TOLRANCE is answer...

because...if one raid fails then we can use another available raid....
Answer:

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