MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signat ure
I declare this is my own work.
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
Tuesday 21 May 2024 Afternoon Time allowed: 1 hour 45 minutes
Materials For Examiner’s Use
• There are no additional materials required for this paper.
• You must not use a calculator. Question Mark
1–4
Instructions
• Use black ink or black ball-point pen. Use pencil only for drawing. 5–6
• Answer all questions. 7–8
• You must answer the questions in the spaces provided. 9
• If you need extra space for your answer(s), use the lined pages at the end of
10–12
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want 13
to be marked. 14–17
Information 18
The total number of marks available for this paper is 90. 19
TOTAL
Advice
For the multiple-choice questions, completely fill in the lozenge alongside the appropriate answer.
CORRECT METHOD WRONG METHODS
If you want to change your answer you must cross out your original answer as shown.
If you wish to return to an answer previously crossed out, ring the answer you now wish to select as
shown.
,MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE
IB/G/Jun24/G4004/E8 8525/2
, 2
Do not write
outside the
Answer all questions. box
0 1 Which statement best describes what computers represent using binary?
Shade one lozenge.
[1 mark]
A All data are represented using binary.
B All data and instructions are represented using binary.
C Some data and instructions are represented using binary.
D Some instructions are represented using binary.
0 2 . 1 Convert the binary number 10110111 into decimal.
[1 mark]
0 2 . 2 Convert the decimal number 112 into hexadecimal.
You should show your working.
[2 marks]
Answer
IB/G/Jun24/8525/2
, 3
Do not write
outside the
0 3 Add together the following three binary numbers and give your answer in binary. box
[2 marks]
0 0 0 0 1 0 1 0
1 0 0 1 1 0 1 0
+ 0 0 1 1 0 0 0 1
0 4 . 1 Figure 1 shows a bit pattern.
Figure 1
00110011
State the result of applying a left binary shift of two to the bit pattern shown
in Figure 1.
[1 mark]
0 4 . 2 The decimal equivalent of the bit pattern shown in Figure 1 is 51
State the result of applying a left binary shift of one to the bit pattern shown
in Figure 1.
Give your answer in decimal.
[1 mark]
Question 4 continues on the next page
Turn over ►
IB/G/Jun24/8525/2
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signat ure
I declare this is my own work.
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
Tuesday 21 May 2024 Afternoon Time allowed: 1 hour 45 minutes
Materials For Examiner’s Use
• There are no additional materials required for this paper.
• You must not use a calculator. Question Mark
1–4
Instructions
• Use black ink or black ball-point pen. Use pencil only for drawing. 5–6
• Answer all questions. 7–8
• You must answer the questions in the spaces provided. 9
• If you need extra space for your answer(s), use the lined pages at the end of
10–12
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want 13
to be marked. 14–17
Information 18
The total number of marks available for this paper is 90. 19
TOTAL
Advice
For the multiple-choice questions, completely fill in the lozenge alongside the appropriate answer.
CORRECT METHOD WRONG METHODS
If you want to change your answer you must cross out your original answer as shown.
If you wish to return to an answer previously crossed out, ring the answer you now wish to select as
shown.
,MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE
IB/G/Jun24/G4004/E8 8525/2
, 2
Do not write
outside the
Answer all questions. box
0 1 Which statement best describes what computers represent using binary?
Shade one lozenge.
[1 mark]
A All data are represented using binary.
B All data and instructions are represented using binary.
C Some data and instructions are represented using binary.
D Some instructions are represented using binary.
0 2 . 1 Convert the binary number 10110111 into decimal.
[1 mark]
0 2 . 2 Convert the decimal number 112 into hexadecimal.
You should show your working.
[2 marks]
Answer
IB/G/Jun24/8525/2
, 3
Do not write
outside the
0 3 Add together the following three binary numbers and give your answer in binary. box
[2 marks]
0 0 0 0 1 0 1 0
1 0 0 1 1 0 1 0
+ 0 0 1 1 0 0 0 1
0 4 . 1 Figure 1 shows a bit pattern.
Figure 1
00110011
State the result of applying a left binary shift of two to the bit pattern shown
in Figure 1.
[1 mark]
0 4 . 2 The decimal equivalent of the bit pattern shown in Figure 1 is 51
State the result of applying a left binary shift of one to the bit pattern shown
in Figure 1.
Give your answer in decimal.
[1 mark]
Question 4 continues on the next page
Turn over ►
IB/G/Jun24/8525/2
