2.3.2 - Data Compression

What is the main purpose of compression?

• To improve the file quality

• To change the file format

• To reduce the file size

• To increase the file size

Which type of compression loses some data and cannot be recovered?

• Lossless compression

• Lossy compression

• Binary compression

• Text compression

Which type of compression is suitable for executable program files?

• Lossless compression

• Video compression

• Image compression

• Lossy compression

What is a typical use of compression on mobile phones?

• To increase the number of applications

• To maximize the number of photos and videos stored

• To improve the battery life

• To enhance the screen resolution

Which algorithm is an example of lossy compression?

• JPEG

• ZIP

• PNG

• TIFF

What is a key characteristic of lossless compression?

• It is only used for images

• Data is encoded differently but can be fully recovered

• Some data is lost

• It always results in larger file sizes

Why is lossy compression considered an acceptable compromise for photographs and videos?

• It is the only method available

• It improves the quality of the image

• The loss of quality is usually not noticeable

• It increases the file size

Which type of data is most suitable for lossless compression?

• Documents and executable files

• Sound files

• Streaming music

• Images and videos

What is a disadvantage of lossy compression?

• It is slower to download

• It reduces the quality of the image or sound

• It results in larger file sizes

• It cannot be used for images

What is the benefit of smaller file sizes in terms of data transfer?

• They improve the quality of the data

• They take longer to download

• They are quicker to download and stream

• They require more storage space