AQA A LEVEL COMPUTER SCIENCE PAPER
1 MS JUNE 2021
A-level
COMPUTER SCIENCE
Paper 1
Time allowed: 2 hours 30 minutes
Materials
For this paper you must have:
• a computer
• a printer
• appropriate software
• the Electronic Answer Document
• an electronic version and a hard copy of the Skeleton Program
• an electronic version and a hard copy of the Preliminary Material
• an electronic version of the Data File game1.txt.
You must not use a calculator.
Instructions
• Type the information required on the front of your Electronic Answer Document.
• Before the start of the examination make sure your Centre Number, Candidate Name and
Candidate Number are shown clearly in the footer of every page (also at the top of the front
cover) of your Electronic Answer Document.
• Enter your answers into the Electronic Answer Document.
• Answer all questions.
• Save your work at regular intervals.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 100.
• No extra time is allowed for printing and collating.
• The question paper is divided into four sections.
Advice
You are advised to allocate time to each section as follows:
Section A – 45 minutes; Section B – 20 minutes; Section C – 15 minutes; Section D – 70 minutes.
At the end of the examination
Tie together all your printed Electronic Answer Document pages and hand them to the Invigilator.
Warning
It may not be possible to issue a result for this paper if your details are not on every page of your
Electronic Answer Document.
IB/G/Jun21/E13 7517/1
, 2
There are no questions printed on this page
IB/G/Jun21/7517/1
, 3
Section A
You are advised to spend no longer than 45 minutes on this section.
Type your answers to Section A in your Electronic Answer Document.
You must save this document at regular intervals.
0 1 The shaded row of Table 1 contains a list of numbers.
A bubble sort algorithm could be used to sort the list of numbers into ascending order.
Complete the unshaded cells of Table 1 to show the results of completing three
passes through the list using a bubble sort algorithm.
You should state the values at the end of each pass.
Table 1
[0] [1] [2] [3] [4] [5]
3 5 8 1 6 4
First pass
Second pass
Third pass
Copy the contents of the unshaded cells in Table 1 into the table in your Electronic
Answer Document.
[3 marks]
Turn over for the next question
Turn over ►
IB/G/Jun21/7517/1
1 MS JUNE 2021
A-level
COMPUTER SCIENCE
Paper 1
Time allowed: 2 hours 30 minutes
Materials
For this paper you must have:
• a computer
• a printer
• appropriate software
• the Electronic Answer Document
• an electronic version and a hard copy of the Skeleton Program
• an electronic version and a hard copy of the Preliminary Material
• an electronic version of the Data File game1.txt.
You must not use a calculator.
Instructions
• Type the information required on the front of your Electronic Answer Document.
• Before the start of the examination make sure your Centre Number, Candidate Name and
Candidate Number are shown clearly in the footer of every page (also at the top of the front
cover) of your Electronic Answer Document.
• Enter your answers into the Electronic Answer Document.
• Answer all questions.
• Save your work at regular intervals.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 100.
• No extra time is allowed for printing and collating.
• The question paper is divided into four sections.
Advice
You are advised to allocate time to each section as follows:
Section A – 45 minutes; Section B – 20 minutes; Section C – 15 minutes; Section D – 70 minutes.
At the end of the examination
Tie together all your printed Electronic Answer Document pages and hand them to the Invigilator.
Warning
It may not be possible to issue a result for this paper if your details are not on every page of your
Electronic Answer Document.
IB/G/Jun21/E13 7517/1
, 2
There are no questions printed on this page
IB/G/Jun21/7517/1
, 3
Section A
You are advised to spend no longer than 45 minutes on this section.
Type your answers to Section A in your Electronic Answer Document.
You must save this document at regular intervals.
0 1 The shaded row of Table 1 contains a list of numbers.
A bubble sort algorithm could be used to sort the list of numbers into ascending order.
Complete the unshaded cells of Table 1 to show the results of completing three
passes through the list using a bubble sort algorithm.
You should state the values at the end of each pass.
Table 1
[0] [1] [2] [3] [4] [5]
3 5 8 1 6 4
First pass
Second pass
Third pass
Copy the contents of the unshaded cells in Table 1 into the table in your Electronic
Answer Document.
[3 marks]
Turn over for the next question
Turn over ►
IB/G/Jun21/7517/1
