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Compression

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What type of compression allows you to reconstruct the original data?

a)

Lossless compression

b)

Lossy compression

2.

What type of compression does not allow you to reconstruct the original data?

a)

Lossless compression

b)

Lossy compression

3.

Based on your experience with text compression, which of the following sentences would compress the BEST?

a)

The quick brown fox jumped over the lazy dog.

b)

Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo.

c)

How much wood would a woodchuck chuck if a woodchuck could chuck wood?

d)

JavaScript scripts are actually different scripts than Java scripts.

4.

I write a poem 100 characters long. I compress this to a string that is 30 characters long and a "key" that is 10 characters long. What is my % compression?

a)

30%

b)

70%

c)

40%

d)

60%

5.

3.5 kB is how many MB?

a)

0.35

b)

0.035

c)

0.0035

d)

0.00035

6.

3.5MB is how many kB?

a)

350

b)

3500

c)

3500000

d)

35000

7.

3.5MB is how many bytes?

a)

3,500

b)

3,500,000

c)

3,500,000,000

d)

350,000

8.

3.5GB is how many kB?

a)

350

b)

3,500

c)

3,500,000

d)

3,500,000,000

9.

350MB is how many GB?

a)

0.0035

b)

0.035

c)

0.35

d)

3.5

10.

350kB is how many bytes?

a)

350,000

b)

3,500,000

c)

350,000,000

d)

3,000,000,000