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EnglandComputer ScienceQuick questions

Data representation and storage

Quick questions on Units of data and file-size calculations - Eduqas GCSE Computer Science

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State how many bits are in a byte. [1 mark]
What is q2?
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An image is 100100 by 100100 pixels with a colour depth of 22 bits. Calculate the file size in bytes. [3 marks]
What is q3?
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A 55-second clip is sampled at 10001000 Hz with a bit depth of 88 bits. Calculate the file size in bytes. [3 marks]

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