What is data compression and name a lossless compression example.

What is data compression and name a lossless compression example.

• A. Data compression reduces file size without losing information; example ZIP.
• B. Data compression increases file size; example ZIP.
• C. Data compression only applies to images; example ZIP.
• D. ZIP is a lossy compression format.

Answer: (A)

Data compression is the process of reducing the amount of data needed to represent information, making storage and transmission more efficient. It works by removing redundancy and encoding data more compactly. There are two main kinds: lossless, where every bit of the original data can be recovered exactly, and lossy, where some information is discarded and perfect restoration isn’t possible. ZIP is an example of lossless compression: it compresses files into an archive so you can decompress later and recover the exact original data. This is why the statement describes data compression as shrinking file size without losing information and points to ZIP as a lossless option.

Data compression is the process of reducing the amount of data needed to represent information, making storage and transmission more efficient. It works by removing redundancy and encoding data more compactly. There are two main kinds: lossless, where every bit of the original data can be recovered exactly, and lossy, where some information is discarded and perfect restoration isn’t possible. ZIP is an example of lossless compression: it compresses files into an archive so you can decompress later and recover the exact original data. This is why the statement describes data compression as shrinking file size without losing information and points to ZIP as a lossless option.