Cambridge IGCSE™
* 7 2 3 3 0 0 5 5 8 3 *
COMPUTER SCIENCE 0478/11
Paper 1 Theory May/June 2022
1 hour 45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
● Answer all questions.
● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
● 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 or correction fluid.
● Do not write on any bar codes.
● 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 12 pages. Any blank pages are indicated.
DC (PQ) 303750/3
© UCLES 2022 [Turn over
, 2
1 Jack has an MP3 file stored on his computer.
(a) (i) Tick (3) to show which type of data is stored in an MP3 file.
Tick (3)
Video
Sound
Image
[1]
(ii) Tick (3) to show whether the MP3 file is a lossy compressed file or a lossless compressed
file or not a compressed file.
Tick (3)
Lossy compressed file
Lossless compressed file
Not a compressed file
[1]
2 A computer is designed using the Von Neumann model for a computer system.
The computer has a central processing unit (CPU).
(a) Data is fetched from primary storage into the CPU to be processed.
(i) State the name of the primary storage from where data is fetched.
..................................................................................................................................... [1]
(ii) The CPU performs a cycle to process data. Fetch is the first stage in this cycle.
State the names of the second and third stages in the cycle.
Second stage ....................................................................................................................
Third stage ........................................................................................................................
[2]
(iii) Identify two components within the CPU that are used in the fetch stage of the cycle.
Component 1 .....................................................................................................................
Component 2 .....................................................................................................................
[2]
© UCLES 2022 0478/11/M/J/22
* 7 2 3 3 0 0 5 5 8 3 *
COMPUTER SCIENCE 0478/11
Paper 1 Theory May/June 2022
1 hour 45 minutes
You must answer on the question paper.
No additional materials are needed.
INSTRUCTIONS
● Answer all questions.
● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs.
● 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 or correction fluid.
● Do not write on any bar codes.
● 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 12 pages. Any blank pages are indicated.
DC (PQ) 303750/3
© UCLES 2022 [Turn over
, 2
1 Jack has an MP3 file stored on his computer.
(a) (i) Tick (3) to show which type of data is stored in an MP3 file.
Tick (3)
Video
Sound
Image
[1]
(ii) Tick (3) to show whether the MP3 file is a lossy compressed file or a lossless compressed
file or not a compressed file.
Tick (3)
Lossy compressed file
Lossless compressed file
Not a compressed file
[1]
2 A computer is designed using the Von Neumann model for a computer system.
The computer has a central processing unit (CPU).
(a) Data is fetched from primary storage into the CPU to be processed.
(i) State the name of the primary storage from where data is fetched.
..................................................................................................................................... [1]
(ii) The CPU performs a cycle to process data. Fetch is the first stage in this cycle.
State the names of the second and third stages in the cycle.
Second stage ....................................................................................................................
Third stage ........................................................................................................................
[2]
(iii) Identify two components within the CPU that are used in the fetch stage of the cycle.
Component 1 .....................................................................................................................
Component 2 .....................................................................................................................
[2]
© UCLES 2022 0478/11/M/J/22
