Free Printable Data Compression

Worksheets

Data Compression

Total questions: 15

Worksheet time: 8mins

Name

Class

Date

Compression that can compress data files without losing any of the information is called

Lossy

Lossless

Makes the file smaller by giving repeated patterns/colours a specific code

Lossy Compression

Lossless Compression

What would you use compression for?

Making an image file smaller

Modifying an image

Which of the following would not be suitable for Lossy Compression?

Images

Music

Videos

Text

Compression in general makes it _______ to send, upload and stream data

Quicker

Slower

Lossless compression permanently deletes the data

True

False

Lossy compression would be suitable for text files

True

False

You would use ______ compression if space was more important than quality

Lossy

Lossless

Which order is correct?

Bit, Nibble, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte

Bit, Byte, Nibble, Megabyte, Kilobyte. Gigabyte, Terabyte

Bit, Nibble, Byte, Megabyte, Kilobyte, Gigabyte, Terabyte

10.

Which file size is larger?

11.

Data compression is important for websites because:

Your webpage will load faster

Compressed images look better

12.

When is Run Length Encoding used?

When we want to compress patterns of data

When we want to decompress patterns of data

When we want to encode running videos

13.

Makes the file smaller by deleting parts of the file permanently (forever)

Lossy Compression

Lossless Compression

14.

The first line of this image in RLE would be...

8W, 1Bl, 20B, 1W

10B, 4Y, 17R, 2G

2G, 10P, 17Y, 2Bl

15.

350MB is how many GB?

0.0035

0.035

0.35

3.5

Reset

Data Compression

Total questions: 15

Worksheet time: 8mins

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