Access speed, uses and capacities of storage Flashcards Preview

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Flashcards in Access speed, uses and capacities of storage Deck (39):
1

What is the capacity of a magnetic hard disk?

19.3 GB - 1.2 TB

2

What is the access time of a magnetic hard drive?

under 10ms

3

What is the capacity of a magnetic floppy disk?

~1MB

4

What is the access time of a magnetic floppy disk?

94ms

5

What is the capacity of a magnetic tape cartridge or cassette?

10-800GB

6

What is the access time of a magnetic tape cartridge or cassette?

long

7

What is the capacity of CD?

600-700 MB

8

What is the access time of CD?

~100ms

9

What is the capacity of DVD?

2.8-17.1 GB

10

What is the access time of DVD?

~100ms

11

What is the capacity of blu ray?

25-50 GB

12

What is the access time of blu ray?

110ms

13

What is the capacity of PDD?

25-50 GB

14

What is the access time of PDD?

100ms

15

What doe PDD stand for?

professional disc for data

16

What is the capacity of HD DVD?

15-51 GB

17

What is the access time of HD DVD?

500ms

18

What is the capacity of USB flash drive?

32MB - 5GB

19

What is the access time of USB flash drive?

0.8-10 ms

20

What is the capacity of a memory card?

128MB - 4GB

21

What is the access time of a memory card?

0.8 - 10 ms

22

What is the use of a magnetic hard disk?

Storage of programs and data files in a computer

23

What is the use of a magnetic floppy disk?

backing up and transferring small files, boot disk for an operating system

24

What is the use of magnetic tape?

backing up and archiving large volumes of data

25

What is the use of CD-ROM?

Distributing software

26

What is the use of CD-RW?

backing up data, transferring files

27

What is the use of CD-R?

transferring files, distributing software, storing photographs, backing up data, archiving data

28

What is the use of DVD-ROM?

Distributing software or videos

29

What is the use of DVD-R?

transferring files, distributing software or videos, storing photographs, backing up data, archiving data

30

What is the use of DVD-RW?

backing up data, transferring files

31

What is the use of DVD-RAM?

backing up data

32

What is the use of blu-ray?

distributing videos

33

What is the use of PDD?

Backing up and archiving data

34

What is the use of HD-DVD?

recording high density video

35

What is the use of a USB flash drive?

transferring files, running applications

36

What is the use of a memory card?

storing photos in a digital camera
storing music in audio devices
storing data in mobile phones

37

What does backing up data mean?

Taking a copy of data and storing it somewhere safe
(eg a fireproof safe or somewhere off-site)

38

What does archiving data mean?

removing data from the online storage medium, usually to free up space

39

When will data qualify for archiving?

It has not been accessed recently and will not be accessed regularly in the future