
WJEC GCSE DT - 1.1 Data (Retrieval Practice)
Quiz by Adam Masters
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What is the difference between analogue and digital data?
Give one advantage of storing data digitally.
What is lossy compression?
Give one disadvantage of lossy compression.
What is lossless compression?
Give one advantage of lossless compression.
Give an example of a file format that uses lossy compression.
Give an example of a file format that uses lossless compression.
What is metadata?
Give one example of how metadata can be used.
What is the difference between a file and a folder?
What is the purpose of a file extension?
What is the primary difference between a raster image and a vector image?
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?
What process is involved in converting an analogue sound wave into digital data?
Which of the following factors influences the quality of a digital audio recording?
An audio engineer wants to archive a high-fidelity recording with no loss of quality. Which audio compression method is most suitable?