Encoding images

1

What is a pixel?

2

Why are vector files often high quality, even when you zoom in or out of the image?

3

What is resolution?

4

What does 'dpi' mean?

5

Why do bitmap images often appear blocky if you enlarge them too much?

6

What is the 'colour depth' of a raster image?

7

Which compressed file format is often used for storing digital camera images?

8

Which of these is NOT true about compressing an image using JPG?

9

What is metadata?

10

Which of these formats uses lossless compression?