Question 1

What is analogue data?

Accepted Answer

Data represented in a physical, continuous form

Answer

Data represented in binary digits

Answer

Data that is compressed using lossy techniques

Answer

Data stored only on magnetic media

Question 2

Which device converts analogue signals into digital data?

Accepted Answer

Analogue-to-Digital Converter (ADC)

Answer

Magnetic Head

Answer

Optical Reader

Answer

Digital-to-Analogue Converter (DAC)

Question 3

What is the sampling frequency of most audio CDs?

Accepted Answer

44 kHz

Answer

128 kHz

Answer

96 kHz

Answer

22 kHz

Question 4

Which of the following is an example of digital data storage?

Accepted Answer

MP3 file

Answer

Analogue TV signal

Answer

Vinyl record

Answer

Magnetic tape

Question 5

How many bytes are in 1 Kilobyte (binary)?

Accepted Answer

1024

Answer

512

Answer

8

Answer

1000

Question 6

Which type of image cannot be scaled up without losing quality?

Accepted Answer

Raster

Answer

SVG

Answer

Geometric

Answer

Vector

Question 7

Lossless compression means:

Accepted Answer

Data is reduced but can be perfectly restored

Answer

Some data is lost permanently

Answer

Images become pixelated

Answer

Sound loses high and low frequencies

Question 8

Which storage medium uses lasers to read and write data?

Accepted Answer

Optical disk

Answer

Solid-state drive

Answer

Flash memory

Answer

Magnetic tape

Question 9

Which storage type has no moving parts and is common in mobile devices?

Accepted Answer

Solid-state

Answer

Cloud

Answer

Magnetic

Answer

Optical

Question 10

Which of the following is a disadvantage of analogue data?

Accepted Answer

Quality declines when copied

Answer

Less accurate due to sampling

Answer

Requires encryption

Answer

Takes up less physical space

Question 11

What does sampling do in sound digitisation?

Accepted Answer

Measures sound at intervals and stores values

Answer

Converts sound into text

Answer

Compresses the sound file

Answer

Plays back the audio at high speed

Question 12

What unit is larger than a gigabyte?

Accepted Answer

Terabyte

Answer

Byte

Answer

Megabyte

Answer

Kilobyte

Question 13

Which image format uses pixels and loses quality when enlarged?

Accepted Answer

Raster

Answer

SVG

Answer

Geometric

Answer

Vector

Question 14

Which image format stores instructions for shapes and scales without losing quality?

Accepted Answer

Vector

Answer

Bitmap

Answer

Raster

Answer

JPEG

Question 15

Which compression method removes some data permanently?

Accepted Answer

Lossy

Answer

Lossless

Answer

Temporary

Answer

Reversible

Question 16

Which of these is an advantage of digital data?

Accepted Answer

Can be stored in smaller devices

Answer

Declines in quality when copied

Answer

Takes up more physical space

Answer

Less accurate due to sampling

Question 17

Which is an advantage of analogue data?

Accepted Answer

No loss of detail due to sampling

Answer

Easily encrypted

Answer

Quick internet transfer

Answer

Files are smaller

Question 18

Which type of storage is cheapest per MB?

Accepted Answer

Optical

Answer

Cloud

Answer

Solid-state

Answer

Magnetic

Question 19

Which type of storage is fastest for access speed?

Accepted Answer

Solid-state

Answer

Optical

Answer

Magnetic tape

Answer

Magnetic

Question 20

Which type of storage is best for large server backups?

Accepted Answer

Magnetic tape

Answer

Flash drive

Answer

CD/DVD

Answer

SD card

Question 21

Which storage type often requires internet access?

Accepted Answer

Cloud

Answer

Magnetic

Answer

Optical

Answer

Solid-state

Question 22

Which of these is an advantage of cloud storage?

Accepted Answer

Can be accessed remotely

Answer

Has no cost

Answer

Requires no electricity

Answer

No internet is required

Question 23

What does lossy compression often remove from audio?

Accepted Answer

Low and high frequencies

Answer

All bass

Answer

All treble

Answer

Mid-range frequencies

Question 24

What is the formula for compression ratio?

Accepted Answer

Original ÷ Compressed

Answer

Compressed ÷ Original

Answer

File size ÷ 2

Answer

100 ÷ Compressed

Question 25

Which image property increases file size?

Accepted Answer

More colours (higher colour depth)

Answer

Black and white only

Answer

Fewer pixels

Answer

Lower resolution

Question 26

Which factor affects the quality of a sound sample?

Accepted Answer

Sampling rate and resolution

Answer

Compression ratio

Answer

Storage medium

Answer

Screen resolution

Question 27

Which is a disadvantage of digital data?

Accepted Answer

Can be inaccurate due to sampling

Answer

Quality declines when copied

Answer

Takes longer to transfer

Answer

Requires more space

Question 28

Which is an example of lossy file type?

Accepted Answer

MP3

Answer

PNG

Answer

ZIP

Answer

BMP

Question 29

Which is an example of lossless compression file type?

Accepted Answer

ZIP

Answer

MP3

Answer

MP4

Answer

JPEG

Question 30

What does a Digital-to-Analogue Converter (DAC) do?

Accepted Answer

Converts digital signals into analogue

Answer

Compresses data

Answer

Converts sound waves into binary

Answer

Converts analogue into text

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