3.1.9: Compression (Lossy and Lossless)

What is the main goal of compression?

• Increasing file size

• Encrypting file data

• Reducing file size

• Changing file format

Which approach physically removes data from a file to reduce its size?

• Data rearrangement

• Lossless compression

• Run length encoding

• Lossy compression

What is a consequence of using lossy compression?

• Data is rearranged

• File quality is reduced

• File format is changed

• File size remains the same

Which algorithm is commonly used for compressing images?

• JPEG

• MP3

• RLE

• ZIP

What does lossless compression rearrange to make data more efficient?

• Bits of data

• Bytes of data

• Frequency data pairs

• Consecutive data blocks

What is the purpose of run length encoding (RLE)?

• Removing data from a file

• Rearranging data blocks

• Encrypting file data

• Compacting repeated data

What is the consequence of using run length encoding on data with few repeats?

• File format is changed

• Data is rearranged

• File size is increased

• File size is reduced

What is the benefit of using run length encoding for long runs of zeros and ones in binary data?

• Increased file size

• Changed file format

• Reduced storage space

• Improved data quality