Data Representation - Storing Images (Year 10 Computing)

The following test is covering 'Data Representation - Storing Images' for Year 10 Computing.

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Question 1

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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which method can reduce the file size of an image without changing its pixel dimensions?

What does 24-bit colour mean?

If an image uses indexed colour with a palette of 256 colours, how many bits per pixel are required?

How many colours can be represented with 16 bits per pixel (assuming no alpha)?

Why might someone use lossless compression for an image?

What is the main difference between bitmap (raster) and vector images?

How do you calculate the total number of pixels in an image?