Understanding File Compression

What is the main purpose of file compression?

• To increase file size for better quality.

• To organize files into folders more efficiently.

• To encrypt files for security purposes.

• To reduce file size for storage and transmission efficiency.

What are the two types of compression mentioned?

• lossless compression, lossy compression

• static compression, dynamic compression

• symmetric compression, asymmetric compression

• zip compression, rar compression

How does lossless compression differ from lossy compression?

• Lossless compression is faster than lossy compression; lossy compression is slower due to data retention.

• Lossless compression is used for images; lossy compression is only for text files.

• Lossless compression reduces file size without any data loss; lossy compression does not affect file size.

• Lossless compression retains all original data; lossy compression sacrifices some data for smaller file sizes.

Can you reconstruct the original data from a lossless compressed file?

• No, lossless compression does not allow for reconstruction.

• Only partial data can be reconstructed from a lossless compressed file.

• Yes, you can reconstruct the original data from a lossless compressed file.

• Lossless compression results in data loss during the process.

What types of files are typically compressed using lossless techniques?

• Text files, executable files, PNG, TIFF, FLAC, ALAC

• GIF files

• MP3 files

• JPEG files

What is a potential downside of using lossy compression?

• Faster compression speed without any drawbacks.

• Loss of quality in the compressed media.

• No loss of data during compression.

• Improved quality in the compressed media.

Which type of compression would you use for a text document?

• Binary compression (e.g., RAR)

• Lossy compression (e.g., JPEG)

• Image compression (e.g., PNG)

• Lossless compression (e.g., ZIP, GZIP)

What is an example of a file type that might use lossy compression?

• PNG

• GIF

• BMP

• JPEG

How does file size impact storage capacity?

• Storage capacity is solely determined by the number of files, not their sizes.

• File size has no effect on storage capacity.

• File size impacts storage capacity by determining how much data can be stored; larger files reduce available space for additional files.

• Smaller files take up more space than larger files.

Why is it important to choose the right compression method?

• All compression methods are equally effective.

• Choosing the wrong method can increase data size.

• It is important to choose the right compression method to optimize storage efficiency, speed, and data integrity.

• The method has no impact on data transfer speed.