8525 GCSE CS 3.8 Compression Quiz (CD Video)

What is the purpose of compression?

• To increase the file size

• To reduce the file size

• To improve the quality of the file

• To slow down data transfer

Why is compression important for mobile phones?

• To maximize the number of photos, videos, and applications that can be stored

• To increase the file size of images

• To slow down data transfer

• To reduce the storage capacity of the phone

What is lossy compression?

• A compression technique that does not affect the quality of the image

• A compression technique that reduces the file size without losing any data

• A compression technique that reduces the file size by losing some data

• A compression technique that is only applicable to text files

Which compression technique is suitable for cartoons and clip arts?

• Lossy compression

• Lossless compression

• Both lossy and lossless compression

• None of the above

What type of compression is suitable for executable program files?

• Lossy compression

• Lossless compression

• Both lossy and lossless compression

• None of the above

What is the main advantage of lossy compression?

• Higher quality of the image

• Smaller file size

• Faster data transfer

• Suitable for all types of data

What is the main advantage of lossless compression?

• Higher quality of the image

• Smaller file size

• Faster data transfer

• Suitable for all types of data

What does compression do to the number of bits in a file?

• Increases the number of bits

• Decreases the number of bits

• Does not affect the number of bits

• Randomly changes the number of bits

Which type of compression is most suitable for documents and executable files?

• Lossy compression

• Lossless compression

• Both lossy and lossless compression

• None of the above