Edexcel International AS Level Computer Science Paper 1 2026 with Mark Scheme (PDF)

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Cambridge International AS & A Level Cambridge International AS & A Level

ECONOMICS 9708/13
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Paper 1 AS Level Multiple Choice May/June 2026
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MARK SCHEME
Maximum Mark: 30
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COMPUTER SCIENCE 9618/13
Paper 1 Theory Fundamentals May/June 2026 Published
1 hour 30 minutes

You must answer on the question paper.
This mark scheme shows the correct answer to each question.
No additional materials are needed.
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We cannot discuss the mark scheme with schools, and we recommend that schools read the mark scheme
together with the question paper and the Principal Examiner Report for Teachers.
INSTRUCTIONS
● Answer all questions.
● Use a black or dark blue pen.
● Write your name, centre number and candidate number in the boxes at the top of the page.
● Write your answer to each question in the space provided.
● Do not use an erasable pen. Do not use correction fluid or tape.
● Do not write on any bar codes.
● You may use an HB pencil for any diagrams, graphs or rough working.
● Calculators must not be used in this paper.


INFORMATION
● The total mark for this paper is 75.
● The number of marks for each question or part question is shown in brackets [ ].
● No marks will be awarded for using brand names of software packages or hardware.




This document has 16 pages. Any blank pages are indicated.


DC (WW/CGW) 363105/2 This document consists of 3 printed pages.
Cambridge University Press & Assessment 2026 [Turn over
Cambridge University Press & Assessment 2026 [Turn over

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9708/13 Cambridge International AS & A Level – Mark Scheme May/June 2026




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2 PUBLISHED
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1 Validation and verification can be used to protect the integrity of data.
Question Answer Marks
Complete the description of methods of ensuring data integrity by writing the missing terms. 1 A 1

2 D 1
................................................................................. is a method of verification where the data is
3 A 1
entered by a user and then manually compared to the original data to make sure that they are
4 D 1
the same.
5 B 1




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A verification method used during data transfer calculates a value from the data 6 D 1

which is transferred with the data. The receiver performs the same calculation 7 A 1

8 C 1
and compares the result with the value transferred.
9 D 1
This method of verification is ................................................................................. .
10 B 1

There are several methods of data validation. ................................................................................. 11 B 1




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check compares the data entered to a list of possible values that can be entered. If the data is 12 B 1

not one of these values it is rejected. 13 D 1

14 A 1
................................................................................. check can be used to make sure data
15 C 1
entered has the correct combination of letters, numbers and symbols. For example, a code may
16 A 1
need to be two capital letters, one number followed by one symbol.
17 B 1

18 A 1
................................................................................. check is used to make sure the correct




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19 A 1
quantity of characters has been entered. For example, a name must be more than one character
20 D 1
and less than or equal to 100 characters.
[5] 21 D 1

22 A 1

23 C 1

24 A 1

25 D 1
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26 C 1

27 B 1

28 A 1

Cambridge University Press & Assessment 2026 9618/13/M/J/26
Cambridge University Press & Assessment 2026 Page 2 of 3
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9708/13 Cambridge International AS & A Level – Mark Scheme May/June 2026
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3 PUBLISHED
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2 (a) Complete the truth table for the given logic circuit.
Question Answer Marks

29 C 1
X
30 C 1

A



Y
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B


Z




X Y Z working space A B
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0 1

1 1 0

1 1 1

[2]


(b) State two logic gates that are not in the circuit in 2(a).
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............................................................................................................................................. [1]




Cambridge University Press & Assessment 2026 9618/13/M/J/26 [Turn over
Cambridge University Press & Assessment 2026 Page 3 of 3
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