Physical Storage Media - DBMS


Which is the cheapest memory device in terms of costs/bit ?

   A.) Semiconductor memory
   B.) Magnetic disks
   C.) Compact disks
   D.) Magnetic tapes

Answer: Option 'C'

Compact disks


Which of the following is a physical storage media ?

   A.) Tape Storage
   B.) Optical Storage
   C.) Flash memory
   D.) All of the mentioned

Answer: Option 'D'

All of the mentioned


_________ is increasingly being used in server systems to improve performance by caching frequently used data, since it provides faster access than disk, with larger storage capacity than main memory.

   A.) Flash memory
   B.) Disk
   C.) Main memory
   D.) Secondary memory

Answer: Option 'A'

Flash memory


There are “record-once” versions of compact disk and digital video disk, which can be written only once; such disks are also called __________ disks.

   A.) CD-ROM
   B.) Write-once, read-many (WORM)
   C.) CD-R
   D.) DVD-W

Answer: Option 'B'

Write-once, read-many (WORM)


Tape storage is referred to as __________ storage.

   A.) Direct-access
   B.) Random-access
   C.) Sequential-access
   D.) All of the mentioned

Answer: Option 'C'


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