Binary and Bitmaps

Which counting system uses only two digits?

• Binary

• Denary

How would you write 21 in binary?

• 10010

• 10101

• 11110

• 10001

What is the decimal number for 11001?

• 26

• 25

• 24

• 23

What are Bitmap pictures made up of?

• squares

• bitmaps

• pixels

Which picture contains most bits?

• Black and white

• Picture

• Drawing

how many colours can you have in an image using 2 bits per pixel?

• 1

• 2

• 4

• 8

How may bytes are there in a kilobyte?

• 100

• 1000

• 10000

• 1000000

Byte, kilobyte, Megabyte, ...... what size comes next?

• Terabyte

• Gigabyte

• Petabyte

How many bytes are there in the word hello?

• 1

• 5

• 10

After an image file has been compressed using lossy compression the image is:

• the same quality

• lower quality

• higher quality