DBMS-Physical Data Organization Questions and Answers

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Q61
Head activation time is the time:
  • A from when a read or write request is issued to when data transfer begins
  • B amount of time required to transfer data from the disk to or from main memory
  • C required to electronically activate the read/write head over the disk surface where data transfer is to take place
  • D None of these
Answer: Option C
Q62
Which of the following is a factor that affects the access time of hard disks?
  • A rotational delay time
  • B data transfer time
  • C seek time
  • D all of these
Answer: Option D
Q63
Which is the least expensive secondary storage device?
  • A zip disk
  • B hard disk
  • C magnetic tape
  • D none of these
Answer: Option C
Q64
Which of the following is not a flexible disks?
  • A optical disk
  • B zip disk
  • C hard disk
  • D jaz disk.
Answer: Option C
Q65
Which of the following is not an optical disk?
  • A WORM
  • B Super disk
  • C CD-ROM
  • D CD-RW
Answer: Option B
Q66
WORM stands for:
  • A Write Once Read Many
  • B Write Optical Read Magnetic
  • C Write On Redundant Material
  • D None of these
Answer: Option A
Q67
What is the expansion of ISAM?
  • A Indexed Sequential Access Method
  • B Internal Storage Access Mechanism
  • C Integrated Storage and Management
  • D None of these
Answer: Option A
Q68
What is the expansion o VSAM?
  • A Very Stable Adaptive Machine
  • B Varying Storage Access Mechanism
  • C Virtual Storage Access Method
  • D Noneof these
Answer: Option C
Q69
Which company developed ISAM?
  • A DEC
  • B IBM
  • C COMPAC
  • D HP
Answer: Option B
Q70
Tertiary storage devices are:
  • A slowest
  • B fastest
  • C medium speed
  • D none of these
Answer: Option A

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