Media Types - Graphics

Question 1

What are the main factors that determine the size of the graphic? (3)

Answer 1

• The physical dimension of the graphic
• The resolution
• The colour depth

Question 2

What are some common methods of compressing a graphic file? (2)

Answer 2

• Decrease the resolution

* Decrease the colour depth

Question 3

What is lossy compression?

Answer 3

When compressing a graphic file reduces the quality of the graphic

Question 4

What are some common standard file formats for graphic files? (4)

Answer 4

• .bmp files which are uncompressed
• .gif files which use lossless compression
• .jpg files which use lossy compression
• .png files which use lossless compression (48 bits)