Question 1

What is the difference between analogue and digital data?

Accepted Answer

Analogue data is continuous, while digital data is discrete

Answer

Analogue data is more reliable than digital data.

Answer

Analogue data is more secure than digital data.

Answer

Analogue data is easier to process than digital data.

Question 2

Give one advantage of storing data digitally.

Accepted Answer

Digital data is less susceptible to noise and distortion.

Answer

d. All of the above

Answer

c. Digital data can be easily compressed.

Answer

b. Digital data takes up less storage space.

Question 3

What is lossy compression?

Accepted Answer

A compression technique that removes some data to reduce the file size.

Answer

A compression technique that is only suitable for text files.

Answer

A compression technique that is used to compress audio files.

Answer

A compression technique that does not result in any loss of data.

Question 4

Give one disadvantage of lossy compression.

Accepted Answer

It reduces the quality of the data.

Answer

It cannot be used to compress image files.

Answer

It is a very slow compression technique.

Answer

It increases the file size.

Question 5

What is lossless compression?

Accepted Answer

A compression technique that allows the original data to be perfectly reconstructed.

Answer

A compression technique that is only suitable for images.

Answer

A compression technique that is used to compress video files.

Answer

A compression technique that results in a significant reduction in file size.

Question 6

Give one advantage of lossless compression.

Accepted Answer

It does not reduce the quality of the data.

Answer

It is a very fast compression technique.

Answer

It significantly reduces the file size.

Answer

It can be used to compress any type of file.

Question 7

Give an example of a file format that uses lossy compression.

Accepted Answer

JPEG

Answer

ZIP

Answer

PDF

Answer

PNG

Question 8

Give an example of a file format that uses lossless compression.

Accepted Answer

PNG

Answer

AAC

Answer

MP3

Answer

JPG

Question 9

What is metadata?

Accepted Answer

Data about data, such as the file size, creation date, and author.

Answer

The actual data contained in a file.

Answer

The location of a file on a computer system.

Answer

The format of a file, such as .doc or .txt.

Question 10

Give one example of how metadata can be used.

Accepted Answer

All of the options

Answer

To search for files on a computer system.

Answer

To track the changes made to a file.

Answer

To identify the author of a document.

Question 11

What is the difference between a file and a folder?

Accepted Answer

All of the options

Answer

A file is used to store information, while a folder is used to organize files.

Answer

A file is a collection of data, while a folder is a container for files.

Answer

A file can be opened and edited, while a folder cannot.

Question 12

What is the purpose of a file extension?

Accepted Answer

To identify the type of file.

Answer

To identify the size of a file.

Answer

To protect a file from unauthorized access.

Answer

To indicate the location of a file on a computer system.

Question 13

What is the primary difference between a raster image and a vector image?

Accepted Answer

Raster images are based on pixels, while vector images are based on mathematical formulas.

Answer

Vector images lose quality when resized, while raster images do not.

Answer

Raster images are typically smaller in file size than vector images.

Answer

Raster images are better suited for creating logos and illustrations.

Question 14

A graphic designer is creating a website banner that needs to be scalable without losing quality. Which image type is best suited for this purpose?

Accepted Answer

Vector

Answer

Pixel-based

Answer

Raster

Answer

Bitmap

Question 15

What process is involved in converting an analogue sound wave into digital data?

Accepted Answer

Sampling

Answer

Interpolation

Answer

Extrapolation

Answer

Filtering

Question 16

Which of the following factors influences the quality of a digital audio recording?

Accepted Answer

All of the options

Answer

Sample rate

Answer

File format

Answer

Bit depth

Question 17

An audio engineer wants to archive a high-fidelity recording with no loss of quality. Which audio compression method is most suitable?

Accepted Answer

Lossless compression

Answer

Lossy compression

Answer

Constant bitrate compression

Answer

Variable bitrate compression

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