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Question 1: What is the primary function of a computer?
- To store physical objects
- To connect to electricity
- To process data and produce output
- To play music only
Answer: C. To process data and produce output
Explanation: A computer is an electronic machine that accepts data, processes it according to specific instructions, and then produces a useful output for the user.
Question 2: Which of these is an example of computer hardware?
- A keyboard
- An operating system
- A word processing app
- A web browser
Answer: A. A keyboard
Explanation: Hardware refers to the physical parts of a computer system that you can touch, such as a keyboard, monitor, or hard disk drive.
Question 3: What is the main role of the CPU in a computer?
- To provide power to the screen
- To connect to the internet
- To store photos permanently
- To act as the computer's brain
Answer: D. To act as the computer's brain
Explanation: The Central Processing Unit, or CPU, is known as the brain of the computer because it processes all the data and instructions given to the system.
Question 4: Which of these is an example of computer software?
- A mouse
- A monitor
- A word processing application
- A hard disk
Answer: C. A word processing application
Explanation: Software consists of the programs and instructions that tell the hardware what to do, such as word processing applications or operating systems.
Question 5: Which device is used to send data into a computer?
- A speaker
- A printer
- A keyboard
- A monitor
Answer: C. A keyboard
Explanation: Input devices are hardware used to send data into a computer, with the keyboard and the mouse being the most common examples used by people.
Question 6: What is the main purpose of an operating system?
- To print documents
- To store data on a cloud
- To manage hardware and software resources
- To browse the internet only
Answer: C. To manage hardware and software resources
Explanation: An operating system is essential software that manages the computer's hardware and software resources, allowing other programs to run effectively.
Question 7: Which of these is a software application used to view websites?
- A hard disk drive
- A CPU
- A keyboard
- A browser
Answer: D. A browser
Explanation: A browser is a software application specifically designed to help users view and navigate websites on the global network known as the Internet.
Question 8: What is an algorithm in computer science?
- A step-by-step procedure to solve a problem
- A physical computer part
- A type of monitor
- A brand of computer
Answer: A. A step-by-step procedure to solve a problem
Explanation: An algorithm is a fundamental concept in coding defined as a step-by-step procedure or a set of rules used to solve a specific problem.
Question 9: Which of these is a common type of personal computer?
- A printer
- A mouse
- A keyboard
- A tablet
Answer: D. A tablet
Explanation: Desktops, laptops, and tablets are the three most common types of personal computers that people use in their daily lives.
Question 10: Which unit is used to measure computer storage capacity?
- Seconds
- Gigabytes
- Celsius
- Inches
Answer: B. Gigabytes
Explanation: Computer memory and storage capacity are measured in units like KB (kilobytes), MB (megabytes), and GB (gigabytes) to indicate how much data is held.