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Edexcel GCSE Computer Science
2.3 Data storage and compression
Units & Conversion
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Units & Conversion exam questions
6 questions with mark schemes and example answers
All 14 cards in this set
What is meant by a byte?
A group of eight bits, which can store one character of text
Which term describes a single binary digit, which is either a 0 or a 1?
Bit
What is meant by a kibibyte?
A unit of data storage equal to 1024 bytes
Which term describes a unit of storage that is equal to 1024 kibibytes?
Mebibyte
What is meant by a tebibyte?
A unit of data storage equal to 1024 gibibytes
What is meant by a gibibyte?
A unit of data storage equal to 1024 mebibytes
How many nibbles are there in one byte?
2
How many bits are there in one nibble?
4 bits
A sound file has a size of 3 MiB. What is its size in KiB?
3072 KiB
Which list shows units in order from smallest to largest?
Bit, nibble, byte, kibibyte, mebibyte
Which statement explains why one kibibyte is 1024 bytes rather than 1000 bytes?
1024 is a power of 2
A memory card holds 16 GiB of data. Each photograph takes 4 MiB. How many photographs can it hold?
4096
Which of these is the largest amount of storage?
3 GiB
Which of these is a sensible file size for a small digital colour photograph?
3 MiB