Grade 4 Technology DBA

1. 01. Why do programmers use functions when writing code?

• Functions help in structuring code, promoting reusability and maintainability.
• Functions are a way to write comments in the code.
• Functions make the code run slower and less efficient.
• Functions are only used for debugging purposes.

1. 02. What is the primary purpose of using variables in programming?

• Variables are only used for error handling in programs.

• Variables are used to comment code for better readability.

• Variables store data values that can be changed during program execution.

• Variables help in making the code more complex.

1. 03. How do loops enhance the efficiency of code?

• Loops make the code harder to read and understand.

• Loops allow for the repetition of code, reducing redundancy and improving efficiency.

• Loops are used to create errors in the code intentionally.

• Loops are only applicable in certain programming languages.

1. 04. Why is debugging an essential part of programming?

• Debugging helps identify and fix errors in the code, ensuring it runs correctly.

• Debugging is only necessary for complex programs.

• Debugging is not important if the code compiles without errors.

• Debugging slows down the development process significantly.

What is the main role of an operating system?

• The main role of an operating system is to manage computer hardware and software resources.
• To provide internet connectivity to devices.
• To run applications without any user input.
• To store all user data permanently.

What can parallelism do in coding?

• Parallelism only works in single-threaded applications.
• Parallelism can significantly enhance performance by executing multiple tasks at the same time.
• Parallelism reduces the need for coding altogether.
• Parallelism makes code execution slower by adding complexity.

How does Boolean logic help in searching online?

• It helps narrow or expand search results using words like AND, OR, and NOT.

• Boolean logic has no impact on search engine algorithms.
• Boolean logic simplifies online searching by removing all keywords.
• Boolean logic is only used in programming languages.

If you delete something by accident, what is one way to restore it?

• Rename the file to recover it
• Delete the file permanently
• Restore from Recycle Bin or Trash
• Send the file to a different folder

Choose the input devices from the list below.

• printer
• monitor
• keyboard, mouse, scanner, microphone
• speaker

Which part of the computer gives instructions to all other parts?

• Graphics Processing Unit (GPU)
• Random Access Memory (RAM)
• Central Processing Unit (CPU)
• Hard Disk Drive (HDD)