Data Representation - Aqa (GCSE Computing)

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

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Why do computers use binary representation internally?

Calculate the binary addition 0101 + 0011 (4-bit arithmetic, no overflow).

What is the maximum unsigned integer value that can be stored in 8 bits?

Which of the following is a lossless compression format commonly used for files?

What is metadata?

What does lossy compression do to a file?

How many different colours can be represented by a 24-bit colour depth image?

How many bits are there in 2 megabytes (using 1 MB = 1024 × 1024 bytes)?

What is the sampling rate in digital audio?

What is the purpose of a parity bit?

In digital audio, what does the bit depth (also called sample resolution) control?

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