Please write clearly in block capitals.
Centre number Candidate number
Surname
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I declare this is my own work.
GCSE
COMPUTER SCIENCE v
Paper 2 Computing concepts
v v v
Tuesday 20 May 2025
v v v Afternoon Time allowed: 1 hour 45 minutes
v v v v v
Materials For Examiner’s Use
Therevarevnovadditionalvmaterialsvrequiredvforvthisvpaper.
Question Mark
Youvmustvnotvusevavcalculator.
1–2
Instructions 3–6
Usevblackvinkvorvblackvball-pointvpen.v Usevpencilvonlyvforvdrawing. 7–8
Answervallvquestions.
9–10
Youvmustvanswervthevquestionsvinvthevspacesvprovided.
Ifvyouvneedvextravspacevforvyourvanswer(s),vusevthevlinedvpagesvatvthevendvofvt 11
hisvbook.v Writevthevquestionvnumbervagainstvyourvanswer(s). 12–14
Dovallvroughvworkvinvthisvbook.v Crossvthroughvanyvworkvyouvdovnotvwantvt
15–19
ovbevmarked.
20
Information TOTAL
Thevtotalvnumbervofvmarksvavailablevforvthisvpapervisv90.
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.
8 5 2 5/2
forvmore:vtyrionp ape rs.c om
IB/G/Jun25/G4005/V6
, 2
Do not write
outside the
Answervallvquestions. box
0 1 .v 1 Statevthevnumbervofvbitsvinvonevbyte.
v
[1vmark]
0 1 .v 2 Statevthevnumbervofvdifferentvvaluesvthatvcanvbevrepresentedvusingvthreevbits.
[1vmark]
0 1 .v 3 Whichvnumbervbasevisvcalledvbinary?
Shadevonevlozenge.
[1vmark]
A Basev2
B Basev8
C Basev10
D Basev16
for more: tyrionpapers.com
IB/G/Jun25/8525/2
, 3
Do not write
outside the
box
0 2 . 1 Convertvthevhexadecimalvnumberv3Fvintovdecimal.
Youvshouldvshowvyourvworking.
[2vmarks]
0 2 .v 2 Addvtogethervthevfollowingvthreevbinaryvnumbers.
Givevyourvanswervinvbinary.
[2vmarks]
0 0 1 0 1 0 0 1
0 1 0 1 1 0 0 0
+0 1 0 0 1 1 0 1
7
Turnvovervforvthevnextvquestion
Turnvoverv►
for more: tyrionpapers.com
IB/G/Jun25/8525/2
, 4
Do not write
outside the
Whichvoptionsvshowvthevtwovlargestvquantitiesvofvbytes?v box
0 3
Shadevtwovlozenges.
[2vmarks]
Av 12v000v000vkB
B 800vMB
C 0.001vTB
D 1400vMB
E 24v000vkB
F 1.5vGB
0 4 Definevthevtermsvsoftwarevandvhardware.
[2vmarks]
Softwarev
Hardwarev
0 5 Onevfunctionvofvanvoperatingvsystemvisvprocessorvmanagement.
Statevtwovothervfunctionsvofvanvoperatingvsystem.
[2vmarks]
Functionv1v
Functionv2v
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 v
Paper 2 Computing concepts
v v v
Tuesday 20 May 2025
v v v Afternoon Time allowed: 1 hour 45 minutes
v v v v v
Materials For Examiner’s Use
Therevarevnovadditionalvmaterialsvrequiredvforvthisvpaper.
Question Mark
Youvmustvnotvusevavcalculator.
1–2
Instructions 3–6
Usevblackvinkvorvblackvball-pointvpen.v Usevpencilvonlyvforvdrawing. 7–8
Answervallvquestions.
9–10
Youvmustvanswervthevquestionsvinvthevspacesvprovided.
Ifvyouvneedvextravspacevforvyourvanswer(s),vusevthevlinedvpagesvatvthevendvofvt 11
hisvbook.v Writevthevquestionvnumbervagainstvyourvanswer(s). 12–14
Dovallvroughvworkvinvthisvbook.v Crossvthroughvanyvworkvyouvdovnotvwantvt
15–19
ovbevmarked.
20
Information TOTAL
Thevtotalvnumbervofvmarksvavailablevforvthisvpapervisv90.
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.
8 5 2 5/2
forvmore:vtyrionp ape rs.c om
IB/G/Jun25/G4005/V6
, 2
Do not write
outside the
Answervallvquestions. box
0 1 .v 1 Statevthevnumbervofvbitsvinvonevbyte.
v
[1vmark]
0 1 .v 2 Statevthevnumbervofvdifferentvvaluesvthatvcanvbevrepresentedvusingvthreevbits.
[1vmark]
0 1 .v 3 Whichvnumbervbasevisvcalledvbinary?
Shadevonevlozenge.
[1vmark]
A Basev2
B Basev8
C Basev10
D Basev16
for more: tyrionpapers.com
IB/G/Jun25/8525/2
, 3
Do not write
outside the
box
0 2 . 1 Convertvthevhexadecimalvnumberv3Fvintovdecimal.
Youvshouldvshowvyourvworking.
[2vmarks]
0 2 .v 2 Addvtogethervthevfollowingvthreevbinaryvnumbers.
Givevyourvanswervinvbinary.
[2vmarks]
0 0 1 0 1 0 0 1
0 1 0 1 1 0 0 0
+0 1 0 0 1 1 0 1
7
Turnvovervforvthevnextvquestion
Turnvoverv►
for more: tyrionpapers.com
IB/G/Jun25/8525/2
, 4
Do not write
outside the
Whichvoptionsvshowvthevtwovlargestvquantitiesvofvbytes?v box
0 3
Shadevtwovlozenges.
[2vmarks]
Av 12v000v000vkB
B 800vMB
C 0.001vTB
D 1400vMB
E 24v000vkB
F 1.5vGB
0 4 Definevthevtermsvsoftwarevandvhardware.
[2vmarks]
Softwarev
Hardwarev
0 5 Onevfunctionvofvanvoperatingvsystemvisvprocessorvmanagement.
Statevtwovothervfunctionsvofvanvoperatingvsystem.
[2vmarks]
Functionv1v
Functionv2v
for more: tyrionpapers.com
IB/G/Jun25/8525/2
