
WJEC GCSE DigiTech Unit 1.1.3 Data Storage
Authored by Mr P
Computers
10th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the binary number system used by computers?
A system that uses only the digits 1 and 0
A system that uses the digits 0 to 9
A system that uses letters and numbers
A system that uses only the digit 1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a bit in terms of data storage?
0 or 1
4 bits
8 bits
1,000 bytes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many bits are in a nibble?
2 bits
4 bits
8 bits
16 bits
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which unit comes after a kilobyte (KB) in the order of data storage?
Byte
Megabyte (MB)
Gigabyte (GB)
Terabyte (TB)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the size of a sound file?
sample rate x duration x bit depth
colour depth x image height x image width
bits per character x number of characters
sample rate + duration + bit depth
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many bytes are in a kilobyte (KB) according to the table?
100 bytes
1,000 bytes
1,024 bytes
10,000 bytes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the size of an image file?
sample rate x duration x bit depth
colour depth x image height x image width
bits per character x number of characters
image height + image width + colour depth
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