Physical Storage Media(Engineering > Computer Science And Engineering > Dbms Questions And Answers ) Questions and Answers
Question 1. Which of the following is a physical storage media ?
Tape Storage
Optical Storage
Flash memory
All of the mentioned
Explanation:-
Answer: Option D. -> All of the mentioned
All of the mentioned The storage media are classified by the speed with which data can be accessed, by the cost per unit of data to buy the medium, and by the medium's reliability.
Question 2. __________ 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.
Flash memory
Disk
Main memory
Secondary memory
Explanation:-
Answer: Option A. -> Flash memory
Flash memoryFlash memory is of two types “ NAND and NOR.
Question 3. Which of the following stores several gigabytes of data but usually lost when power failure?
Flash memory
Disk
Main memory
Secondary memory
Explanation:-
Answer: Option C. -> Main memory
Main memoryThe contents of main memory are usually lost if a power failure or system crash occurs.
Question 4. The flash memory storage used are
NOR Flash
OR Flash
AND Flash
All of the mentioned
Explanation:-
Answer: Option A. -> NOR Flash
NOR FlashNAND flash has a much higher storage capacity for a given cost, and is widely used for data storage in devices such as cameras, music players, and cell phones.
Question 5. The _________ is the fastest and most costly form of storage, which is relatively small; its use is managed by the computer system hardware.
Cache
Disk
Main memory
Flash memory
Explanation:-
Answer: Option A. -> Cache
CacheCache storage is easy to access because it is closer to the processor.
Question 6. Which is the cheapest memory device in terms of costs/bit ?
Semiconductor memory
Magnetic disks
Compact disks
Magnetic tapes
Explanation:-
Answer: Option C. -> Compact disks
Compact disksCompact disk is used for easy storage at lower cost .
Question 7. Optical disk _______ systems contain a few drives and numerous disks that can be loaded into one of the drives automatically (by a robot arm) on demand.
Tape Storage
Jukebox
Flash memory
All of the mentioned
Explanation:-
Answer: Option B. -> Jukebox
JukeboxThe most popular form of optical disks are CD and DVD.
Question 8. Tape storage is referred to as __________ storage.
Direct-access
Random-access
Sequential-access
All of the mentioned
Explanation:-
Answer: Option C. -> Sequential-access
Sequential-accessTape storage is used primarily for backup and archival data.
Question 9. The primary medium for the long-term online storage of data is the __________ where the entire database is stored on magnetic disk.
Semiconductor memory
Magnetic disks
Compact disks
Magnetic tapes
Explanation:-
Answer: Option B. -> Magnetic disks
Magnetic disksThe system must move the data from disk to main memory so that they can be accessed .
Question 10. There are "record-once versions of compact disk and digital video disk, which can be written only once; such disks are also called __________ disks.
Write-once, read-many (WORM)
CD-R
DVD-W
CD-ROM
Explanation:-
Answer: Option A. -> Write-once, read-many (WORM)
Write-once, read-many (WORM)There are also "multiple-write versions of compact disk (called CD-RW) and digital video disk (DVD-RW, DVD+RW, and DVD-RAM), which can be written multiple times.