Data Representation - Storing Images (GCSE Computing)

The following is a GCSE Computing test covering 'Data Representation - Storing Images'

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Question 1

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Which formula gives the uncompressed file size (in bytes) of a bitmap image?

What is metadata in the context of image files?

Which of the following is a reason to reduce image resolution before uploading to a website?

If you double both the width and height of an image, what happens to the total number of pixels?

An image is 1024×768 with 24 bits per pixel. What is its uncompressed size in kilobytes (KB)?

An image is 800 pixels wide and 600 pixels high. How many pixels does it contain?

Why is JPEG not ideal for storing images that will be edited multiple times?

Which of the following best describes image resolution?

Which statement best describes GIF image format limitations?

Why might someone use lossless compression for an image?

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

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