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COMPUTING > Access speed, uses and capacities of storage > Flashcards

Access speed, uses and capacities of storage Flashcards

1
Q

What is the capacity of a magnetic hard disk?

A

19.3 GB - 1.2 TB

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2
Q

What is the access time of a magnetic hard drive?

A

under 10ms

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3
Q

What is the capacity of a magnetic floppy disk?

A

~1MB

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4
Q

What is the access time of a magnetic floppy disk?

A

94ms

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5
Q

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

A

10-800GB

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6
Q

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

A

long

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7
Q

What is the capacity of CD?

A

600-700 MB

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8
Q

What is the access time of CD?

A

~100ms

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9
Q

What is the capacity of DVD?

A

2.8-17.1 GB

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10
Q

What is the access time of DVD?

A

~100ms

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11
Q

What is the capacity of blu ray?

A

25-50 GB

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12
Q

What is the access time of blu ray?

A

110ms

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13
Q

What is the capacity of PDD?

A

25-50 GB

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14
Q

What is the access time of PDD?

A

100ms

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15
Q

What doe PDD stand for?

A

professional disc for data

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16
Q

What is the capacity of HD DVD?

A

15-51 GB

17
Q

What is the access time of HD DVD?

A

500ms

18
Q

What is the capacity of USB flash drive?

A

32MB - 5GB

19
Q

What is the access time of USB flash drive?

A

0.8-10 ms

20
Q

What is the capacity of a memory card?

A

128MB - 4GB

21
Q

What is the access time of a memory card?

A

0.8 - 10 ms

22
Q

What is the use of a magnetic hard disk?

A

Storage of programs and data files in a computer

23
Q

What is the use of a magnetic floppy disk?

A

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

24
Q

What is the use of magnetic tape?

A

backing up and archiving large volumes of data

25
Q

What is the use of CD-ROM?

A

Distributing software

26
Q

What is the use of CD-RW?

A

backing up data, transferring files

27
Q

What is the use of CD-R?

A

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

28
Q

What is the use of DVD-ROM?

A

Distributing software or videos

29
Q

What is the use of DVD-R?

A

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

30
Q

What is the use of DVD-RW?

A

backing up data, transferring files

31
Q

What is the use of DVD-RAM?

A

backing up data

32
Q

What is the use of blu-ray?

A

distributing videos

33
Q

What is the use of PDD?

A

Backing up and archiving data

34
Q

What is the use of HD-DVD?

A

recording high density video

35
Q

What is the use of a USB flash drive?

A

transferring files, running applications

36
Q

What is the use of a memory card?

A

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

37
Q

What does backing up data mean?

A

Taking a copy of data and storing it somewhere safe

eg a fireproof safe or somewhere off-site

38
Q

What does archiving data mean?

A

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

39
Q

When will data qualify for archiving?

A

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

COMPUTING (14 decks)

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