Data representation L2

Images are made up of many _______.

• elements

• pixels

• pictures

• binary

Computers represent all information in binary

• True

• False

What is colour depth?

• How many binary digits is used to represent a pixel

• How many pixels there are in a photo

• A black and white photo

• None of the above

Which of the following is not a valid binary number

• 011011

• 10

• 0

• 14001

What is the bit-length of this binary number: 0011 0011

• 4

• 8

• 1

• 2

Compression is when you _____________.

• Send a file to another person

• Reduce a file's size

• Change the colours in an image

• Save a file to your computer

Select the TWO right answer: What are the types of compression?

• Colour depth

• Lossy

• Glossy

• Lossless

Which type of compression saves the most space?

• Lossy

• Lossless

Lossy compression does not lose any quality

• True

• False