# Topic 1 - Data Representation (Hexadecimal Numbers)

## Quiz by Mifthah Ahmed

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20 questions
• Q1
What is the binary number 1001 1010 in hexadecimal?
8B
9A
A9
B8
30s
• Q2
The hexadecimal EF can be converted to
1101 1011
1110 1111
1111 0111
1111 0001
30s
• Q3
How is the number FF represented in binary?
1010 1010
0101 0101
1111 0000
1111 1111
30s
• Q4
How is the hexadecimal 66 represented in binary?
0001 1000
1000 0001
0110 0110
1001 0001
30s
• Q5
How is the hexadecimal A7 represented in binary?
1010 0111
0111 0111
0111 1010
1010 1010
30s
• Q6
What is the base system for Hexadecimal?
Base 10
Base 8
Base 2
Base 16
30s
• Q7
What does the term base 16 refer to?
The number of characters that the hex system uses, 0-9 and A - F
The number if items that can be represented using Hex
The number of combinations that hex can hold
The number that hex counts up until, 0 - 16
30s
• Q8
One hex digit is equivalent to a __ bit binary sequence?
2
4
8
4
30s
• Q9
Why is the hexadecimal system used?
To complicate binary codes
To simplify binary codes
So humans can not de-crypt binary
30s
• Q10
What is a popular use of the hexadecimal system?
Writing programs
Programming network
Shorthand for words
Colour codes
30s
• Q11
Why is hexadecimal used to represent color codes?
To make it harder to understand
To take up more space
It is easier to and shorter to store hex over binary
Because colors do not have a binary value
30s
• Q12
What is the maximum number than can be represented by 1 hex character?
16
8
4
2
30s
• Q13
1F
1E
E1
F1
30s
• Q14
10110011 to Hex =
A3
C4
B3
2F
30s
• Q15
0010101 to Hex =
14
11
13
15
30s

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