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WorksheetsY9 Data representation
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which unit of data is the smallest?
a)
Kilobyte
b)
Megabyte
c)
Gigabyte
2.
How many bits are there in a nibble?
a)
8
b)
4
c)
2
3.
What denary number does this binary represent:
00110101 ?
a)
31
b)
42
c)
53
4.
Add these binary numbers together:
00100101 + 10011011.
What is the result?
a)
11000000
b)
10100010
c)
01101010
5.
Which of the following best describes ASCII?
a)
A number set
b)
A character set
c)
A symbol set
6.
What is each pixel in a bitmap image represented by?
a)
A binary code.
b)
Programming code.
c)
Machine code.
7.
How many colours can be represented in a 2 bit image?
a)
4
b)
3
c)
2
8.
What is the number 10 represented as in hexadecimal?
a)
C
b)
B
c)
A
9.
What is the hexadecimal number for this binary number 10001010?
a)
7C
b)
9B
c)
8A
10.
Which of the following best describes sound stored by a computer?
a)
Digital
b)
Sound waves
c)
Analogue
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