AQA
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
May 2023
, 2
Do not write
Answer all questions in the spaces provided. outside the
box
0 1 . 1 The number base 2 is called binary.
Shade one lozenge to show which number base is called hexadecimal.
[1 mark]
A 6
B 8
C 10
D 16
0 1 . 2 Shade two lozenges to show the statements that are true about hexadecimal.
[2 marks]
A Hexadecimal can represent a greater range of numbers than binary.
B Hexadecimal is easier for people to read than binary.
C Hexadecimal is faster for a computer to process than binary.
D Hexadecimal is more accurate than binary.
E Hexadecimal takes less space in RAM than binary.
F Hexadecimal takes less time to type than binary.
0 2 . 1 Convert the decimal number 171 into binary.
[1 mark]
IB/G/Jun23/8525/2
, 3
Do not write
outside the
0 2 . 2 Convert the hexadecimal number 2D into binary. box
You should show your working.
[2 marks]
Answer
0 3 Add together the following three binary numbers and give your answer in binary.
[2 marks]
0 1 0 1 1 0 0 0
0 0 0 1 1 0 0 1
+ 0 1 0 0 1 0 1 1
0 4 Convert 16 000 000 bits to megabytes (MB).
You should show your working.
[2 marks]
Answer MB
Turn over ►
IB/G/Jun23/8525/2
, 4
Do not write
outside the
box
IB/G/Jun23/8525/2
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
May 2023
, 2
Do not write
Answer all questions in the spaces provided. outside the
box
0 1 . 1 The number base 2 is called binary.
Shade one lozenge to show which number base is called hexadecimal.
[1 mark]
A 6
B 8
C 10
D 16
0 1 . 2 Shade two lozenges to show the statements that are true about hexadecimal.
[2 marks]
A Hexadecimal can represent a greater range of numbers than binary.
B Hexadecimal is easier for people to read than binary.
C Hexadecimal is faster for a computer to process than binary.
D Hexadecimal is more accurate than binary.
E Hexadecimal takes less space in RAM than binary.
F Hexadecimal takes less time to type than binary.
0 2 . 1 Convert the decimal number 171 into binary.
[1 mark]
IB/G/Jun23/8525/2
, 3
Do not write
outside the
0 2 . 2 Convert the hexadecimal number 2D into binary. box
You should show your working.
[2 marks]
Answer
0 3 Add together the following three binary numbers and give your answer in binary.
[2 marks]
0 1 0 1 1 0 0 0
0 0 0 1 1 0 0 1
+ 0 1 0 0 1 0 1 1
0 4 Convert 16 000 000 bits to megabytes (MB).
You should show your working.
[2 marks]
Answer MB
Turn over ►
IB/G/Jun23/8525/2
, 4
Do not write
outside the
box
IB/G/Jun23/8525/2
