Which of the following stripes the data and the parity information at the block level across all the drives in the
set?

A.
RAID Level 5

B.
RAID Level 0

C.
RAID Level 2

D.
RAID Level 1

Explanation:
With RAID level 5 data are written in disk sector units to all drives. Parity is written to all drives also, which
ensures there is no single point of failure.
Incorrect Answers:
B: RAID Level 0 does not use a parity bit. It just stripes data over several drives.
C: RAID Level 2 does not use block level parity. It uses hamming code parity.
D: RAID Level 1 does not use a parity bit. It uses mirroring of drives.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 1270