Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
Tuesday 20 May 2025 Afternoon Time allowed: 1 hour 45 minutes
Materials For Examiner’s Use
There are no additional materials required for this paper.
Question Mark
You must not use a calculator.
1–2
Instructions 3–6
Use black ink or black ball-point pen. Use pencil only for drawing. 7–8
Answer all questions.
9–10
You must answer the questions in the spaces provided.
If you need extra space for your answer(s), use the lined pages at 11
the end of this book. Write the question number against your 12–14
answer(s). 15–19
Do all rough work in this book. Cross through any work you do
20
not want to be marked.
TOTAL
Information
The total number of marks available for this paper is 90.
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.
for more:
IB/G/Jun25/G4005/V6 tyrionp ape rs.c om
8 5 2 5/2
, 2
Do not write
outside the
Answer all box
questions.
0 1 .1 State the number of bits in one
byte. [1 mark]
0 1 .2 State the number of different values that can be represented using
three bits. [1 mark]
0 1 .3 Which number base is called
binary? Shade one lozenge.
[1 mark]
A Base 2
B Base 8
C Base 10
D Base 16
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
, 3
Do not write
outside the
0 2 . 1 Convert the hexadecimal number 3F into box
decimal. You should show your working.
[2 marks]
2
0 2 . Add together the following three binary [2 marks]
numbers. Give your answer in binary.
0 0 1 0 1 0 0 1
0 1 0 1 1 0 0 0
+ 1 0 0 1 1 0 1
0
Turn over for the next question
Turn over ►
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
, 4
Do not write
outside the
0 3 Which options show the two largest quantities of box
bytes? Shade two lozenges.
[2 marks]
A 12 000 000 kB
B 800 MB
C 0.001 TB
D 1400 MB
E 24 000 kB
F 1.5 GB
0 4 Define the terms software and hardware.
[2 marks]
Software
Hardware
0 5 One function of an operating system is processor management.
State two other functions of an operating system.
[2 marks]
Function 1
Function 2
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMPUTER SCIENCE
Paper 2 Computing concepts
Tuesday 20 May 2025 Afternoon Time allowed: 1 hour 45 minutes
Materials For Examiner’s Use
There are no additional materials required for this paper.
Question Mark
You must not use a calculator.
1–2
Instructions 3–6
Use black ink or black ball-point pen. Use pencil only for drawing. 7–8
Answer all questions.
9–10
You must answer the questions in the spaces provided.
If you need extra space for your answer(s), use the lined pages at 11
the end of this book. Write the question number against your 12–14
answer(s). 15–19
Do all rough work in this book. Cross through any work you do
20
not want to be marked.
TOTAL
Information
The total number of marks available for this paper is 90.
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.
for more:
IB/G/Jun25/G4005/V6 tyrionp ape rs.c om
8 5 2 5/2
, 2
Do not write
outside the
Answer all box
questions.
0 1 .1 State the number of bits in one
byte. [1 mark]
0 1 .2 State the number of different values that can be represented using
three bits. [1 mark]
0 1 .3 Which number base is called
binary? Shade one lozenge.
[1 mark]
A Base 2
B Base 8
C Base 10
D Base 16
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
, 3
Do not write
outside the
0 2 . 1 Convert the hexadecimal number 3F into box
decimal. You should show your working.
[2 marks]
2
0 2 . Add together the following three binary [2 marks]
numbers. Give your answer in binary.
0 0 1 0 1 0 0 1
0 1 0 1 1 0 0 0
+ 1 0 0 1 1 0 1
0
Turn over for the next question
Turn over ►
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
, 4
Do not write
outside the
0 3 Which options show the two largest quantities of box
bytes? Shade two lozenges.
[2 marks]
A 12 000 000 kB
B 800 MB
C 0.001 TB
D 1400 MB
E 24 000 kB
F 1.5 GB
0 4 Define the terms software and hardware.
[2 marks]
Software
Hardware
0 5 One function of an operating system is processor management.
State two other functions of an operating system.
[2 marks]
Function 1
Function 2
for more: tyrionpapers.com
IB/G/
Jun25/8525/2
