Compression

Question 1

What is lossy compression?

Answer 1

A data compression method that reduces file size by permanently eliminating some data.

Question 2

What is lossless compression?

Answer 2

A data compression method that reduces file size without losing any information.

Question 3

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

Answer 3

True

Question 4

Fill in the blank: Lossy compression is often used for ______ files.

Answer 4

audio and video

Question 5

Give an example of a lossy compression format.

Answer 5

MP3

Question 6

Give an example of a lossless compression format.

Answer 6

ZIP

Question 7

True or False: Lossless compression is typically more efficient than lossy compression.

Answer 7

False

Question 8

What is a key advantage of lossless compression?

Answer 8

It preserves the original quality of the data.

Question 9

What type of data is best suited for lossless compression?

Answer 9

Text and executable files.

Question 10

How does lossy compression achieve smaller file sizes?

Answer 10

By removing less important data.

Question 11

True or False: Images in JPEG format use lossless compression.

Answer 11

False

Question 12

What is the primary disadvantage of lossy compression?

Answer 12

Loss of data quality.

Question 13

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

Answer 13

The amount of data processed per unit of time.

Question 14

Fill in the blank: Lossy compression can be adjusted to balance ______ and quality.

Answer 14

file size

Question 15

What compression method is used by PNG images?

Answer 15

Lossless compression

Question 16

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

Answer 16

False

Question 17

What is the main purpose of data compression?

Answer 17

To reduce the amount of storage space needed.

Question 18

What type of compression is typically used for streaming video?

Answer 18

Lossy compression

Question 19

Fill in the blank: The ______ algorithm is commonly used in lossless compression.

Answer 19

Huffman

Question 20

What is a major application of lossy compression?

Answer 20

Streaming music services.

Question 21

What does it mean for compression to be ‘reversible’?

Answer 21

The original data can be perfectly reconstructed.

Question 22

Which format is known for using lossless compression for images?

Answer 22

GIF

Question 23

True or False: Lossless compression always results in a smaller file size than lossy compression.

Answer 23

False

Question 24

What is the effect of high compression ratios in lossy formats?

Answer 24

Increased loss of quality.

Question 25

Fill in the blank: Lossy compression is often used in ______ to save bandwidth.

Answer 25

telecommunications

Question 26

What is the common use case for lossless compression in software development?

Answer 26

Storing source code.

Question 27

What type of data typically benefits from lossy compression?

Answer 27

Multimedia files.

Question 28

True or False: All lossy compression formats are the same.

Answer 28

False

Question 29

Fill in the blank: ______ compression is essential for archival purposes.

Answer 29

Lossless

Question 30

What is the main advantage of lossy compression over lossless?

Answer 30

Significantly smaller file sizes.

Question 31

What file extension is commonly associated with lossless audio compression?

Answer 31

.FLAC

Question 32

What type of algorithm is used for lossy compression?

Answer 32

Psychoacoustic models.

Question 33

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

Answer 33

True

Question 34

Fill in the blank: A common use of lossless compression is in ______ backup systems.

Answer 34

data

Question 35

What is a potential downside of lossy compression in professional settings?

Answer 35

Inability to recover original quality.

Question 36

What is the primary purpose of lossy compression in video games?

Answer 36

To reduce loading times.

Question 37

Fill in the blank: Lossy compression often involves ______ techniques to minimize perceived quality loss.

Answer 37

visual and auditory

Question 38

What does 'artifacting' refer to in lossy compression?

Answer 38

Visual or auditory distortions caused by compression.

Question 39

True or False: Lossless compression is slower than lossy compression.

Answer 39

True

Question 40

What is the main characteristic of lossless audio formats?

Answer 40

They retain all original sound quality.

Question 41

Fill in the blank: ______ compression is typically used for web images to reduce loading times.

Answer 41

Lossy

Question 42

What is the impact of compression on file transfer speeds?

Answer 42

Compressed files transfer faster.

Question 43

True or False: All lossless compression methods are lossless in every context.

Answer 43

False

Question 44

What is a common feature of lossy video formats?

Answer 44

They often support streaming.

Question 45

Fill in the blank: The ______ format is a lossless alternative to JPG.

Answer 45

PNG

Question 46

What does the term 'compression ratio' refer to?

Answer 46

The ratio of the original size to the compressed size.