1.9 Lossless Compression Quiz

What is lossless compression?

• A method of reducing file size without losing any information or quality.

• A method of reducing file size by compressing the file into a smaller format.

• A method of reducing file size by removing unnecessary data.

• A method of reducing file size by sacrificing some information or quality.

Name one advantage of lossless image compression.

• Reduces file size.

• Preserves image quality

• Increases image resolution.

• Improves image clarity.

What is the purpose of lossless compression in image files?

• To reduce file size without losing image data or quality.

• To add additional image data to the file.

• To convert the image to a different file format.

• To increase file size without losing image data or quality.

What is the difference between lossless and lossy compression?

• Lossless compression sacrifices some data, while lossy compression preserves all data.

• Lossless compression preserves all data, while lossy compression sacrifices some data.

• Lossless compression and lossy compression both preserve all data.

• Lossless compression discards some data, while lossy compression preserves all data.

How does lossless compression reduce file size?

• By converting the file to a smaller file format.

• By removing redundant or unnecessary data without losing any information.

• By deleting random parts of the file.

• By compressing the file using a lossy algorithm.

What are some common lossless compression algorithms used for image compression?

• JPEG, BMP, ZIP

• PNG, GIF, TIFF

Explain the concept of entropy coding in lossless compression.

• Entropy coding is a technique used in lossy compression.

• Entropy coding assigns longer codes to more frequently occurring symbols.

• Entropy coding is a technique used in lossless compression to reduce the size of data by assigning shorter codes to more frequently occurring symbols and longer codes to less frequently occurring symbols.

• Entropy coding is a technique used in image compression.

What is the file format commonly used for lossless image compression?

• BMP

• GIF

• PNG

• JPEG

What are some limitations of lossless compression?

• Lossless compression may not achieve as high compression ratios as lossy compression methods, and it may require more processing power and time to compress and decompress data compared to lossy compression.

• Lossless compression may result in larger file sizes compared to lossy compression.

• Lossless compression may not be suitable for compressing certain types of data, such as multimedia files.

• Lossless compression may not preserve all details and quality of the original data.

How does lossless compression affect the quality of an image?

• Lossless compression reduces the quality of an image.

• Lossless compression does not affect the quality of an image.

• Lossless compression increases the quality of an image.

• Lossless compression distorts the quality of an image.