Lossy and lossless compression

Question 1

What is lossy compression?

Answer 1

Lossy compression is a type of data compression that reduces file size by permanently eliminating some data.

Question 2

What is lossless compression?

Answer 2

Lossless compression is a type of data compression that reduces file size without losing any data.

Question 3

True or False: Lossy compression can result in a decrease in quality.

Answer 3

True

Question 4

True or False: Lossless compression is typically used for audio and video files.

Answer 4

False

Question 5

Fill in the blank: JPEG is an example of ______ compression.

Answer 5

lossy

Question 6

Fill in the blank: PNG is an example of ______ compression.

Answer 6

lossless

Question 7

Which compression method is generally used for text files?

Answer 7

Lossless compression

Question 8

What is one advantage of lossy compression?

Answer 8

It significantly reduces file size.

Question 9

What is one disadvantage of lossless compression?

Answer 9

It does not reduce file size as much as lossy compression.

Question 10

Multiple Choice: Which of the following is NOT a lossy compression format? A) MP3 B) GIF C) JPEG D) AAC

Answer 10

B) GIF

Question 11

What does the term ‘bitrate’ refer to in the context of audio compression?

Answer 11

The amount of data processed per unit of time, usually measured in kilobits per second (kbps).

Question 12

True or False: Lossy compression can be reversed to restore the original data.

Answer 12

False

Question 13

What type of files would typically use lossless compression?

Answer 13

Text files, software, and images that require high fidelity.

Question 14

Fill in the blank: The term ‘artifact’ in lossy compression refers to ______.

Answer 14

visual or auditory distortions resulting from compression.

Question 15

What is a common use case for lossy compression?

Answer 15

Streaming audio and video online.

Question 16

Multiple Choice: Which format is best for images that require transparency? A) JPEG B) PNG C) WAV D) MP3

Answer 16

B) PNG

Question 17

What happens to data during lossy compression?

Answer 17

Some data is permanently removed.

Question 18

True or False: Lossless compression can be used for all types of files.

Answer 18

False

Question 19

Which of the following is a disadvantage of lossy compression? A) Reduced quality B) Larger file size C) Slower processing

Answer 19

A) Reduced quality

Question 20

What is the primary goal of data compression?

Answer 20

To reduce the amount of storage space needed and to speed up file transfer.

Question 21

Fill in the blank: MP3 is a popular format for ______ compression.

Answer 21

lossy

Question 22

What does ‘decompression’ refer to?

Answer 22

The process of restoring a compressed file to its original form.

Question 23

True or False: Lossless compression is commonly used for video files.

Answer 23

False

Question 24

Which of the following is an example of lossless compression? A) MP4 B) FLAC C) JPEG D) GIF

Answer 24

B) FLAC

Question 25

What is a common characteristic of lossy compression algorithms?

Answer 25

They prioritize file size over perfect fidelity.

Question 26

Multiple Choice: Which file format is typically used for lossless audio? A) MP3 B) WAV C) JPEG D) MPEG

Answer 26

B) WAV