Data Representation - Aqa (GCSE Computing)

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

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

What is a key advantage of Unicode over ASCII?

What does lossy compression do to a file?

What is the 8-bit two`s complement representation of -5?

How many unique values can be represented with 12 bits?

What is the 8-bit two`s complement value 11111111 equal to in decimal?

Convert the binary number 10110 to decimal.

What is the sampling rate in digital audio?

How many bits does standard ASCII use to encode characters (original ASCII specification)?

What is the effect of a left bitwise shift by one position on an unsigned integer?

What is the purpose of a parity bit?

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