Digital Storage and Compression Quiz

Which of the following is NOT a unit of digital storage?

• Bit

• Byte

• Nickel

• Kilobyte

16 bits is equal to how many bytes?

• 1

• 2

• 4

• 8

The ASCII value of the letter “a” is:

• 65

• 66

• 90

• 97

How many colours can 2-bit colour depth represent?

• 2

• 4

• 8

• 16

Which is the correct formula for file size (in bytes)?

• Height × Width × Colour Depth ÷ 8

• Height × Width ÷ Colour Depth

• Height × Width × Pixels ÷ 2

• Height × Width × Colour Depth × 8

How many bytes are needed to store the word “BOOK”?

• 3

• 4

• 5

• 8

A kilobyte (KB) is equal to how many bytes?

• 100

• 512

• 1024

• 2048

Which is NOT an advantage of file compression?

• Smaller storage needed

• Faster transfer speed

• Better quality of image

• Easier to send by email

If you download a 300 MB file at 10 MB/s, how long will it take?

• 10 seconds

• 30 seconds

• 60 seconds

• 300 seconds

In 1-bit colour, the binary code “11” represents:

• Black

• White

• Red

• Gray