Lossy and lossless quiz

What is the primary purpose of compression?

• To enhance the image quality

• To decrease the download speed

• To reduce the file size

• To increase the file size

Which type of compression results in some data loss?

• Data expansion

• Data encryption

• Lossy compression

• Lossless compression

What is a typical use of compression on mobile phones?

• To decrease battery life

• To improve the device's aesthetic

• To maximize storage space

• To reduce the screen size

Which of the following is NOT a benefit of smaller file sizes?

• Quicker to download

• Makes streaming services possible

• Takes up less space on storage devices

• Increases the cost of data transfer

What is lossy compression?

• A method that does not reduce file size

• A method where no data is lost

• A method where some data is lost but can be recovered

• A method where some data is lost and cannot be recovered

Which algorithms are mentioned as examples of lossy compression?

• JPEG and GIF

• ZIP and RAR

• HTTP and FTP

• SSH and SSL

What is true about lossless compression?

• It cannot be used on text and executable files

• It always results in a larger file size than lossy compression

• It is most suitable for images, sound, and video

• It allows the original data to be perfectly reconstructed

For what type of data is lossy compression NOT applicable?

• Photographs

• Executable program files

• Music files

• Video files

What does lossless compression do?

• Reduces the quality of images and sound

• Loses some data to reduce file size

• Encodes data completely differently without losing any data

• Increases the number of bits in a file

Which of the following is a characteristic of lossy compression?

• Cannot be used for photographs

• Increases file size

• Suitable for all types of data

• Reduces file size significantly by losing some data