1.3 Data Compression

What is the primary purpose of data compression?

• To increase the quality of images and videos.

• To reduce the size of a file.

• To encrypt data for security.

• To convert file formats.

Which statement accurately describes lossy compression?

• It preserves all original data, allowing perfect reconstruction.

• It is primarily used for text documents and executable files.

• It reduces file size by permanently removing some data, which may affect quality.

• It increases the file size to improve data integrity.

What is a key characteristic of lossless compression?

• It is best suited for full-color photographs.

• It results in some data being permanently lost.

• It allows the compressed file to be perfectly restored to its original state.

• It always produces smaller file sizes than lossy compression.

For which type of files is lossless compression most suitable?

• Images and videos where some quality loss is acceptable.

• Text documents and executable code where data integrity is crucial.

• Audio files that need significant size reduction.

• Any file type, as it always provides the highest compression ratio.