RAID - DBMS

1.

With multiple disks, we can improve the transfer rate as well by ___________ data across multiple disks.

   A.) Striping
   B.) Dividing
   C.) Mirroring
   D.) Dividing

Answer: Option 'A'

Striping

2.

______________ partitiones data and parity among all N+1 disks, instead of storing data in N-disks and parity in one disk.

   A.) Block interleaved parity
   B.) Block interleaved distributed parity
   C.) Bit interleaved parity
   D.) Bit parity

Answer: Option 'B'

Block interleaved distributed parity

3.

____________ which increases the number of I/O operations needed to write a single logical block, pays a significant time penalty in terms of write performance.

   A.) RAID level 1
   B.) RAID level 2
   C.) RAID level 5
   D.) RAID level 3

Answer: Option 'A'

RAID level 1

4.

Hardware RAID implementations permit _________; that is, faulty disks can be removed and replaced by new ones without turning power off.

   A.) Scrapping
   B.) Hot swapping
   C.) Swapping
   D.) None of the mentioned

Answer: Option 'B'

Hot swapping

5.

Optical disk technology uses

   A.) Helical scanning
   B.) DAT
   C.) a laser beam
   D.) RAID

Answer: Option 'D'

RAID

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