## Quiz by GCSE Computer Science Teacher 2

GCSE (AQA)
Computer Science
English National Curriculum

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12 questions
• Q1
What does it mean to apply a binary shift?
To multiply or divide a number
To subtract from a number
To move a number in memory
30s
3.3.4
• Q2
Which direction should the binary digits move if the number is multiplied?
Up
Right
Down
Left
30s
3.3.4
• Q3
Which direction should the binary digits move if the number is divided?
Left
Down
Up
Right
30s
3.3.4
• Q4
Once the existing digits are shifted left in a binary multiplication, what should fill those spaces?
It depends on what was there before
Nothing
1's
0's
30s
3.3.4
• Q5
How many digits must a number shift to get a multiplication or division of 2?
3
1
2
4
30s
3.3.4
• Q6
How many digits must a number shift to get a multiplication or division of 4?
2
3
1
4
30s
3.3.4
• Q7
How many digits must a number shift to get a multiplication or division of 16?
2
3
4
1
30s
3.3.4
• Q8
What would binary number 010011 be after a shift of 2 (left) is applied to it?
00100101
01001100
00101001
01001111
60s
3.3.4
• Q9
What term describes not having enough bits to store a newly calculated binary number?
Logic error
Overflow
Run time error
Syntax Error
60s
3.3.4
• Q10
What happens when you need to add 1 + 1 together in binary addition?
You write down 2
You get an error
You write down 1 and carry 1 over
You write down 0, and carry the 1 over
60s
3.3.4
• Q11
What will happen at the end of this addition?
You write 1 and add another column
The last number will default to 1
There will be an overflow error
You write 0 and carry the 1
60s
3.3.4
• Q12
What is the result of the following numbers being added together?
10000101
Overflow
11011100
10011100
60s
3.3.4

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