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OXFORD CAMBRIDGE AND RSA 2024 GCE Computer Science H446/02: Algorithms and programming A Level ACTUAL QUESTION PAPER AND MARKING SCHEME MERGED CA$10.15   Add to cart
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OXFORD CAMBRIDGE AND RSA 2024 GCE Computer Science H446/02: Algorithms and programming A Level ACTUAL QUESTION PAPER AND MARKING SCHEME MERGED

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OXFORD CAMBRIDGE AND RSA 2024 GCE Computer Science H446/02: Algorithms and programming A Level ACTUAL QUESTION PAPER AND MARKING SCHEME MERGED

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  • October 24, 2024
  • 65
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ocr 2024 gce computer science h44602 algorithm

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  • OCR

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OXFORD
CAMBRIDGE GCE Computer Science H446/02:
AND RSA Algorithms and programming A Level
2024




[Type the document subtitle]

, Oxford Cambridge and RSA


Tuesday 18 June 2024 – Afternoon
A Level Computer Science
H446/02 Algorithms and programming
Time allowed: 2 hours 30 minutes

You can use:
• a ruler (cm/mm)
• an HB pencil
Do not use:
• a calculator




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. You can use an HB pencil, but only for graphs and diagrams.
• 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 has 32 pages.

ADVICE
• Read each question carefully before you start your answer.




OCR is an exempt Charity
Turn over

, 2
Section A

1 A student has written this pseudocode algorithm:

01 a = 12

02 do

03 b = input("Enter a number") 04

until b >= 0 and b <= 100

05 for c = 1 to a 06

print(c * a) 07 next c

(a) The program uses variables.

(i) Describe what is meant by a variable.

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

. ....................................................................................................................................................................................................... [2]

(ii) Give the identifiers of all the variables used in this program.

. ....................................................................................................................................................................................................... [1]

(b) The student has used a do loop on line 02.

Describe the difference between a do loop and a while loop.

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................
[2]




© OCR 2024

, 3
(c) Rewrite lines 05to 07to use a while loop instead of a for loop.

You should write your answer using either program code or pseudocode.

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

..........................................................................................................................................................

. ....................................................................................................................................................................................................... [4]




© OCR 2024 Turn over

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