IGCSEComputer ScienceCIETopic Questions2. Data transmission2.1 Types and Methods of Data Transmission

Types and Methods of Data Transmission (CIE IGCSE Computer Science)

Topic Questions

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1a
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A company has a website that is stored on a web server.

a)
The website data is broken down into packets to be transmitted to a user.

Describe the structure of a data packet.
 [4]

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1b
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b)
The website hosts videos that users can stream. The company uploads new videos to the website.

The company uses parallel half-duplex data transmission to transmit the data for the new videos to the web server.

Explain why parallel half-duplex data transmission is the most appropriate method.
 [4]

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2
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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.

Julia uses a USB connection to transfer data onto her USB flash memory drive.

i)


One benefit of using a USB connection is that it is a universal connection.

State two other benefits of using a USB connection.

Benefit 1 .................................................................
Benefit 2 .................................................................

[2]
ii)
Identify the type of data transmission used in a USB connection.
 [1]

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3
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Four 7-bit binary values are transmitted from one computer to another. A parity bit is added to each binary value creating 8-bit binary values. All the binary values are transmitted and received correctly.

The data is sent using parallel half-duplex data transmission.

i)
Describe how data is sent using parallel half-duplex data transmission.
 [4]
ii)
State two drawbacks of using parallel data transmission.

Drawback 1 ..........................................................................
Drawback 2 ..........................................................................
[2]

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4
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A Von Neumann model for a computer system contains several integrated circuits (IC).

Parallel data transmission is used in an IC.

i)
Describe how data is transmitted using parallel data transmission.

[2]

ii)
Give one benefit of using parallel, rather than serial, data transmission

[1]

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5a
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Arjun uses a scanner to create digital versions of some printed documents. 

The scanner is attached to his computer using a USB connection.

a)
Tick (✓) to show if the USB connection uses Parallel or Serial data transmission.
Describe your chosen method of data transmission.

Parallel  


Serial  

   
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5b
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b)
Give three benefits of a USB connection.

Benefit 1 ...............................................................................

Benefit 2 ...............................................................................

Benefit 3 ................................................................................
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