27 Questions
Which of the following is true about analogue data?
It changes smoothly
What is the smallest piece of data that a computer can process or store?
Bits
Which of the following is an example of digital storage medium?
Computer hard-drives
What is the advantage of magnetic storage over other storage types?
It is low cost per gigabyte
What is the process called to convert analogue sound into digital data?
Analogue to digital conversion
What determines the quality of digital sound?
Sample rate and bit depth
Which of the following is true about bitmap images?
They have higher file sizes compared to vector images
Which of the following is a popular lossless compression type for graphics that might need to be edited?
PNG
What is the disadvantage of lossy compression for digital sound?
It permanently removes data to reduce file size and can result in lower quality sound
Which of the following is true about analogue data?
It changes smoothly and continuously
Which type of storage medium is affected by magnetic fields?
Magnetic storage
What is the advantage of solid-state storage over hard disks?
It is faster
What is the purpose of an analogue to digital converter (ADC)?
To convert analogue sound to digital sound
Which type of image is made up of pixels?
Bitmap images
What determines image resolution?
The number of pixels displayed horizontally and vertically
Which type of image compression maintains image quality but still reduces file size?
Lossless compression
Which type of file is popular for simple animated images?
GIF
What is the advantage of compressed digital sound files over uncompressed digital sound files?
Lower quality
Which of the following is true about analogue data?
It changes smoothly and continuously
Which type of storage medium is affected by magnetic fields?
Magnetic storage
What is the advantage of solid-state storage over hard disks?
It is faster
What is the purpose of an analogue to digital converter (ADC)?
To convert analogue sound to digital sound
Which type of image is made up of pixels?
Bitmap images
What determines image resolution?
The number of pixels displayed horizontally and vertically
Which type of image compression maintains image quality but still reduces file size?
Lossless compression
Which type of file is popular for simple animated images?
GIF
What is the advantage of compressed digital sound files over uncompressed digital sound files?
Lower quality
Learn about the differences between analogue and digital data, the conversion process for analogue data, the types of storage mediums including their advantages and disadvantages, as well as the conversion and compression techniques for digital sound and images.
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