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Data Representation - Aqa (GCSE Computing)

The following is a GCSE Computing test covering 'Data Representation - Aqa'
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which number system uses digits 0–9 and letters A–F?
What is the decimal value of hexadecimal A?
Calculate the binary addition 0101 + 0011 (4-bit arithmetic, no overflow).
What is the purpose of a parity bit?
How many bits are there in 2 megabytes (using 1 MB = 1024 × 1024 bytes)?
What is the uncompressed file size in bytes of an 800 x 600 image with 24-bit colour (no metadata or compression)?
What is the maximum unsigned integer value that can be stored in 8 bits?
How many different colours can be represented by a 24-bit colour depth image?
How many bits are there in a nibble?
What is the 8-bit two`s complement representation of -5?
What is metadata?