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MCQs

Total Questions : 22 | Page 2 of 3 pages
Question 11. The overall I/O rate in RAID level 4 is :
  1.    low
  2.    very low
  3.    high
  4.    None of these
 Discuss Question
Answer: Option C. -> high


None.


Question 12. A performance problem with _________ is the expense of computing and writing parity.
  1.    non-parity based RAID levels
  2.    parity based RAID levels
  3.    all RAID levels
  4.    None of these
 Discuss Question
Answer: Option B. -> parity based RAID levels


None.


Question 13. A write of a block has to access : (choose all that apply)
  1.    the disk on which the block is stored
  2.    parity disk
  3.    a parity block
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these


None.


Question 14. RAID level 0+1 is used because, RAID level 0 provides ______ whereas RAID level 1 provides ________.
  1.    performance, redundancy
  2.    performance, reliability
  3.    redundancy, performance
  4.    None of these
 Discuss Question
Answer: Option B. -> performance, reliability


None.


Question 15. RAID level ____ spreads parity and data among all N+1 disks rather than storing data in N disks and parity in 1.
  1.    3
  2.    4
  3.    5
  4.    6
 Discuss Question
Answer: Option C. -> 5


None.


Question 16. The potential overuse of a single parity disk is avoided in RAID level ____.
  1.    3
  2.    4
  3.    5
  4.    All of these
 Discuss Question
Answer: Option C. -> 5


None.


Question 17. RAID level 5 is also known as :
  1.    bit-interleaved parity organization
  2.    block-interleaved parity organization
  3.    block-interleaved distributed parity
  4.    memory-style ECC organization
 Discuss Question
Answer: Option C. -> block-interleaved distributed parity


None.


Question 18. The solution to the problem of reliability is the introduction of __________.
  1.    aging
  2.    scheduling
  3.    redundancy
  4.    disks
 Discuss Question
Answer: Option C. -> redundancy


None.


Question 19. The mean time to failure of a mirrored disk depends on :I) the mean time to failure of individual disks II) the mean time to repair
  1.    Only I
  2.    Only II
  3.    Both I and II
  4.    Neither I nor II
 Discuss Question
Answer: Option C. -> Both I and II


None.


Question 20. RAID level ________ refers to disk arrays with striping at the level of blocks, but without any redundancy.
  1.    0
  2.    1
  3.    2
  4.    3
 Discuss Question
Answer: Option A. -> 0


None.


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