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ICT > Storage > Flashcards

Storage Flashcards

1
Q

What type of memory can be described like this?
Volatile – loses contents when power is turned off
Contents can be altered by the user (i.e., it is read/write)
Stores data as long as power is supplied

A

RAM

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2
Q

What are three features of a DVD-ROM

A

Can only be read
Higher storage capacity compared to CDs
Used for movies, multimedia programs, etc.
Drives can also read CDs

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3
Q

What type of memory does not lose contents when power is turned off?

A

Non volatile

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4
Q

What is Stored in chips?

A

memory

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5
Q

What does it mean when memory is non volatile?

A

memory does not lose contents when power is turned off

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6
Q

What are the two types of memory?

A

ROM and RAM

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7
Q

What are four features of Magnetic hard disk drives?

A

Very high storage capacity
Very high transfer rate (i.e., speed of reading/copying data)
Can be removable/ portable
All computers come with one

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8
Q

What does RAM stand for?

A

random access memory

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9
Q

What does ROM stand for?

A

read only memory

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10
Q

What are three features of a CD-ROM?

A

used mainly for transfer of software
data can only be read
storage capacity of 600 Mb

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11
Q 
What are these features of?
Small and portable
Large storage for size
Very reliable
Can easily be lost
Slow transfer rate
A

Memory stick/pen drives/USB drives

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12
Q

How are Backing/secondary storage devices and media used? (two things)

A

Used for the storage of data and programs not needed instantly by the computer
Used to take backups (i.e. copies) for security purposes

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13
Q

What are four things about memory?

A

Used to hold data (program instructions and data it is currently processing)
Stored in chips
Contents of memory are available immediately
Two types ROM and RAM

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14
Q

What has the following features?

allows data to be stored over and over again
slower transfer rate than a hard drive
not as robust as a hard drive

A

CD-RW

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15
Q

How does storage work on a DVD-R?

A

Can only be recorded onto once

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16
Q

What are features of a CD-RW?

A

allows data to be stored over and over again
slower transfer rate than a hard drive
not as robust as a hard drive

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17
Q 
What has the following features?
Very high storage capacity 
Very high transfer rate (i.e., speed of reading/copying data)
Can be removable/ portable
All computers come with one
A

Magnetic hard disk drives

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18
Q

What are four things about Optical Drives?

A

Use removable media (i.e. CD or DVD)
Can be used for backups
DVD used for films
CD used for music or software

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19
Q

What are three things about Magnetic Cartridges?

A

Used for backing up large amounts of data
Huge storage capacity
More used for commercial systems

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20
Q

What has the following features?
Thin cards used in digital cameras
Can be used in MP3 players

A

Flash memory card drives

21
Q

What are these features of?
used mainly for transfer of software
data can only be read
storage capacity of 600 Mb

A

CD-ROM

22
Q

What has the following features?

Use removable media (i.e. CD or DVD)
Can be used for backups
DVD used for films
CD used for music or software

A

Optical drives

23
Q

What type of memory is used to hold instructions needed to start the computer?

A

ROM

24
Q

What is
Used for the storage of data and programs not needed instantly by the computer
Used to take backups (i.e. copies) for security purposes

A

Backing/secondary storage devices and media

25
Q

What are two features of flash memory card drives and cards?

A

Thin cards used in digital cameras

Can be used in MP3 players

26
Q

what are three features of ROM?

A

Non volatile – does not lose contents when power is turned off
Contents cannot be altered by the user
Used to hold instructions needed to start the computer

27
Q

How does storage work on a DVD-RAM?

A

Allows repeated storage like a hard drive

28
Q

What are two features of RAM?

A

Volatile – loses contents when power is turned off

Contents can be altered by the user (i.e., it is read/write)

29
Q

What does it mean if memory is volatile ?

A

It means that loses contents when power is turned off or interrupted

30
Q

Used to hold data (program instructions and data it is currently processing)

A

memory

31
Q

How many times can a CD-R be written to?

A

Once

32
Q

What has the following features?

Used for backing up large amounts of data
Huge storage capacity
More used for commercial systems

A

Magnetic cartridges

33
Q

What are five features of Memory stick/pen drives/USB drives?

A 
Small and portable
Large storage for size
Very reliable
Can easily be lost
Slow transfer rate
34
Q 
What has the following features?
Can only be read
Higher storage capacity compared to CDs
Used for movies, multimedia programs, etc.
Drives can also read CDs
A

DVD-ROM

35
Q

How does storage work on a DVD+RW?

A
  • Are read/write

- Sometimes called DVD burners

36
Q

What does “RW” mean in CD-RW?

A

Re-Rewritable

37
Q

Storage devices and media

Define ‘back-up data’

A

The copying of files to a different media in case of problems with main storage; back-ups are often stored at a different location

38
Q

Define ‘serial access’

A

How data/records are located by starting at the beginning of the file and reading through al records in order until the required record is found

39
Q

Define ‘key field’

A

This is a field in a record which will uniquely identify each record

40
Q

Define ‘field’

A

This is one of the pieces of data which makes up a record

41
Q

Define ‘record’

A

A group of fields such are all rested to each other

42
Q

Define ‘file’

A

A group of records make up a file

43
Q

Define ‘master file’

A

A collection of records which contain the main data

44
Q

Define ‘transaction file’

A

A collection of records which are used to update a master file; these files will contain changes from a period of time

45
Q

Define ‘direct access’

A

The ability to locate the required record without the need to read or scan any of the previous records

46
Q

Define ‘magnetic storage media’

A

A system that uses magnetic properties of a coating of iron or nickel alloys to store/read data in the form of 1s and 0s

47
Q

Define ‘optical storage media’

A

A system that uses the optical properties of laser light (blue or red) to store and read data

48
Q

Define ‘solid state media’

A

A system that works by controlling the movement of electrons within a NAND or NOD chip, data is stored as 1s and 0s in millions of tiny transistors within the chip; most systems use NAND and are often referred to as flash memory

ICT (9 decks)

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