Computer Science for IGCSE & O level - Software (Section 1)

1
What is the purpose of an operating system's kernel?
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(B)
To manage the hardware and provide core services.
2
What is the main goal of disk defragmentation?
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A
D
3
What happens during the 'decode' stage of the Fetch-Decode-Execute cycle?
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(C)
The instruction is translated into commands the CPU can understand.
4
Which of the following features is commonly found in an IDE's code editor?
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A
B
5
What does the acronym 'GUI' stand for?
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(C)
Graphical User Interface
6
What is the main function of the Task Manager in an operating system?
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(C)
To provide information about running processes and system performance.
7
What does 'RAM' stand for?
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(A)
Random Access Memory
8
What are the advantages of high-level programming languages?
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A
D
9
What component of the operating system is responsible for managing the computer's memory?
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(B)
The Memory Manager
10
What is the main function of a 'compiler'?
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(B)
To translate the entire program into machine code.
11
What is the function of a buffer?
คำตอบ
A
C
12
In the context of programming languages, what is assembly language?
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(B)
A machine-level programming language.
13
In software development, what does syntax highlighting contribute to?
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(B)
Improved readability of the code.
14
What do you need to use to write a computer program?
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B
C
15
What is the main function of a compiler?
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(A)
To translate high-level language code into machine code.
16
What is a key function of the operating system in managing user accounts?
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(A)
Creating, deleting, and modifying user accounts
17
What does the term 'machine code' refer to?
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(C)
Binary instructions directly understood by the CPU.
18
What is the primary function of an operating system's 'memory management' component?
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(B)
To allocate and deallocate memory resources.
19
Which of the following is an example of system software?
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(C)
Windows 11
20
What is the primary goal of 'compiling' a program?
คำตอบ
(B)
To translate it into machine code.
21
What type of software is responsible for translating source code into machine code?
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(B)
Compiler
22
Which of the following best describes an interpreter?
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(B)
It translates and executes code line by line.
23
What is the main function of a screen saver?
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(A)
To protect the screen from burn-in and display a visual when the computer is idle.
24
What does the assembler do?
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(B)
Translates assembly language into machine code.
25
Which interface type is most suitable for a user who has little or no knowledge of how the computer works?
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(B)
Graphical User Interface (GUI)
26
What is the core function of a CPU (Central Processing Unit)?
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(B)
To execute instructions.
27
In the Fetch-Decode-Execute cycle, what occurs during the 'decode' stage?
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(C)
The instruction is translated into actions the CPU can perform.
28
In a simple program using Scratch, what action would the block 'say [Hello] for [2] seconds' perform?
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(C)
It would display 'Hello' on the screen for two seconds.
29
What is the function of the 'BIOS' or 'UEFI' in a computer?
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(C)
To initialize hardware and start the operating system.
30
In programming, what is the main benefit of 'auto-completion'?
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(C)
Faster coding and reduced errors.
31
What is a key function of an API?
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(B)
To enable communication between different applications.
32
What is the role of a memory management function within an operating system?
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(B)
To allocate and deallocate memory to different processes.
33
What is the function of an antivirus program?
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(C)
To detect and remove malware.
34
Which component of the OS is responsible for managing files and directories?
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(B)
The File Manager
35
Which of the following is a task of an assembler?
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(A)
Translate source code to machine code.
36
What is a buffer used for?
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(B)
To temporarily store data while transferring it between different devices or processes
37
What does 'code formatting' mean in an IDE?
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(C)
Organizing the code to improve readability.
38
Which feature in an IDE can provide suggestions for fixing errors?
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(C)
Error diagnostics and auto-correction
39
What does the Fetch-Decode-Execute cycle do?
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(C)
Describes how the CPU processes instructions.
40
Which software category does a web browser belong to?
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(C)
Application software
41
What is the main function of a kernel?
คำตอบ
(C)
Managing the computer's core resources.
42
Which of the following is a characteristic of high-level programming languages?
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B
D
43
In the context of an IDE, what function does a 'debugger' serve?
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(C)
To find and fix errors.
44
What does the abbreviation 'BIOS' stand for?
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(A)
Basic Input Output System
45
Which of the following is a typical feature of an Integrated Development Environment (IDE)?
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(C)
A code editor.
46
Which of the following are features of a command-line interface?
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B
C
47
Which of the following is a primary disadvantage of high-level languages?
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(B)
Programs can take longer to write.
48
Which of these best describes the function of an interpreter?
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(B)
Executes code line by line after translation.
49
What is the primary function of the 'shell' in an operating system?
คำตอบ
(A)
To provide the user interface.
50
What is a primary purpose of an IDE?
คำตอบ
(B)
To provide a comprehensive environment for writing and debugging software.