College Board 2.2 Data Compression Review

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Which of the following is an advantage of a lossless compression algorithm over a lossy compression algorithm?
A lossless compression algorithm can guarantee that compressed information is kept secure, while a lossy compression algorithm cannot.
A lossless compression algorithm can guarantee restriction of original data, while a lossy compression algorithm cannot.
A lossless compression algorithm typically allows for faster transmission speeds than does a lossy compression algorithm.
A lossless compression algorithm typically provides a greater reduction in the number of bits stored or transmitted than does a lossy compression algorithm.

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A lossless compression algorithm can guarantee restriction of original data, while a lossy compression algorithm cannot.

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A user wants to save a data file on an online storage site. The user wants to reduce the size of the file, if possible, and wants to be able to completely restore the file to its original version. Which action best supports the user's needs? Options: Compressing the file using lossless compression algorithm before uploading it., Compressing the file using lossy compression algorithm before uploading it., Compressing the file using both lossy and lossless compression algorithms before uploading it., Uploading the original file without using any compression algorithm.

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Compressing the file using lossless compression algorithm before uploading it.

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A programmer is developing software for a social media platform. The programmer is planning to use compression when users send attachments to other users. Which of the following is a true statement about the use of compression? Lossy compression of an image file generally provides a greater reduction in transmission time than lossless compression does.

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Lossy compression of an image file generally provides a greater reduction in transmission time than lossless compression does.