Exam-style question
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Why are image and sound files often compressed?.
- A.To reduce the amount of storage space and data needed to transmit them
- B.To guarantee that every file becomes lossless
- C.To convert every file into a text file
- D.To increase the number of pixels or sound samples
Model answer
What a good answer should say
- To reduce the amount of storage space and data needed to transmit them
Explanation
Why this works
Compression reduces the size of a file, which can save storage space and reduce the data needed when the file is transmitted. Other files, including text files, can also be compressed.
Common mistake
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