Oxford Cambridge and RSA
Tuesday 12 October 2021 – Afternoon
A Level Computer Science
H446/02 Algorithms and programming
Time allowed: 2 hours 30 minutes
You can use:
* 8 2 4 8 5 5 2 1 3 9 *
• a ruler (cm/mm)
• an HB pencil
Do not use:
• a calculator
* H 4 4 6 0 2 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 140.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document consists of 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2021 [601/4911/5] OCR is an exempt Charity
DC (ST/CT) 300154/7 Turn over
, 2
BLANK PAGE
PLEASE DO NOT WRITE ON THIS PAGE
© OCR 2021
, 3
Section A
Answer all the questions.
1 Taylor is creating an online multiplayer game where users can create accounts and build their own
circus. Each circus will contain characters such as clowns, animals, magicians and dancers.
Users can set up a new circus in the online world, purchase new characters and visit other users’
circuses.
(a) Taylor uses computational methods to analyse the problem including abstraction.
Describe how Taylor could use abstraction in the design of his online circus game.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [3]
(b) Taylor will make use of concurrent processing within his circus game.
(i) Describe what is meant by the term ‘concurrent processing’.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...................................................................................................................................... [2]
(ii) Explain why concurrent processing is needed to allow multiple users to log in and interact
with game elements at the same time.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...................................................................................................................................... [3]
© OCR 2021 Turn over
Tuesday 12 October 2021 – Afternoon
A Level Computer Science
H446/02 Algorithms and programming
Time allowed: 2 hours 30 minutes
You can use:
* 8 2 4 8 5 5 2 1 3 9 *
• a ruler (cm/mm)
• an HB pencil
Do not use:
• a calculator
* H 4 4 6 0 2 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 140.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document consists of 28 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2021 [601/4911/5] OCR is an exempt Charity
DC (ST/CT) 300154/7 Turn over
, 2
BLANK PAGE
PLEASE DO NOT WRITE ON THIS PAGE
© OCR 2021
, 3
Section A
Answer all the questions.
1 Taylor is creating an online multiplayer game where users can create accounts and build their own
circus. Each circus will contain characters such as clowns, animals, magicians and dancers.
Users can set up a new circus in the online world, purchase new characters and visit other users’
circuses.
(a) Taylor uses computational methods to analyse the problem including abstraction.
Describe how Taylor could use abstraction in the design of his online circus game.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [3]
(b) Taylor will make use of concurrent processing within his circus game.
(i) Describe what is meant by the term ‘concurrent processing’.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...................................................................................................................................... [2]
(ii) Explain why concurrent processing is needed to allow multiple users to log in and interact
with game elements at the same time.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...................................................................................................................................... [3]
© OCR 2021 Turn over
