Data Storage (CIE IGCSE Computer Science)

Topic Questions

1
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6 marks

Julia inputs personal data into her computer.

She stores three copies of the data using a hard disk drive (HDD), a solid state drive (SSD) and a USB flash memory drive.

Six statements are shown about HDDs, SSDs and USB flash memory drives.

Tick (✓) to show which statements apply to each type of storage. Some statements can apply to more than one type of storage.

Statement HDD
(✓)
SSD
(✓)
USB flash
memory
drive
(✓)
 it has no moving parts      
 it is non-volatile      
 it can use NAND gates to store data      
 it uses magnetic properties to store data      
 it has the smallest physical size      
 it has the slowest read/write speeds      

[6]

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2a
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3 marks

Elle uses both CDs and DVDs to store her school projects.

a)
Give three similarities between a CD and a DVD
[3]
2b
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1 mark
b)
State one difference between a CD and a DVD
[1]

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3
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2 marks

Kamil is setting up a new computer system to record television programmes. He wants to be able to record, view and then erase programmes that he does not want to keep. He has chosen to use DVD-RAM as an optical storage medium.

Explain to Kamil why it is better to use DVD-RAM rather than DVD+RW or DVD-RW.

1 ...................................................................

2 ....................................................................

[2]

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4
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1 mark

A computer has a Von Neumann architechure.

The computer uses a bootstrap.

Tick () one box to show the part of a computer of which the bootstrap is an example.

A application software box enclose space space space end enclose
B firmware box enclose space space space end enclose
C hard disk drive box enclose space space space end enclose
D MAC address box enclose space space space end enclose

[1]

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5a
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4 marks
a)
Draw a diagram to represent how virtual memory is created and used.
[4]
5b
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3 marks
b)
A student is using software to create 3D models. This process often requires the use of virtual memory.

Explain why virtual memory is needed for this process.
[3]

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6a
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4 marks

Alessandro has some important data stored on his computer.

He is concerned about accidental damage to his data.

a)

Alessandro uses an SSD to store his data.

Describe what is meant by an SSD and how it operates to store data

[4]

6b
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6 marks
b)
 Alessandro also uses off-line storage to store his data.

 Three examples of off-line storage are Blu-ray, CD and DVD.

 Six statements are given about off-line storage.

 Tick (✓) to show if each statement applies to Blu-ray, CD, or DVD.

 Some statements apply to more than one example of off-line storage

Statement Blu-ray
(✓)
CD
(✓)
DVD
(✓)
A type of optical storage      
Has the largest storage capacity      
Can be dual layer      
Read using a red laser      
Has the smallest storage capacity      
Stores data in a spiral track      

[6]

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7
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2 marks

Flash memories and CD-RWs are used as backing media for computers.

Give two differences between these two media.

1 ..................................................
2 ..................................................

[2]

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8
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1 mark

Andrew sends a large document to a printer.

State the name for the area of memory used to store temporarily the data being sent to the printer.

[1]

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