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 image format is commonly associated with lossy compression and used for photographs?

What does 24-bit colour mean?

Which statement best describes GIF image format limitations?

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

Why might someone use lossless compression for an image?

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

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

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

An image with dimensions 1600×1200 uses 32 bits per pixel. What is the uncompressed file size in megabytes (MB)?

What is the purpose of a colour palette in indexed images?

Which of the following best describes image resolution?

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