Q1. What is the main purpose of a computer?
a) To perform calculations
b) To store data
c) To process information
d) All of the above
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Correct Answer: d) All of the above
Explanation: A computer is an electronic device designed to perform calculations, store data, and process information. It executes instructions from software to perform tasks like calculations, data storage, and information processing.
Q2. Which of the following best describes the evolution of computers?
a) From mechanical to electronic devices
b) From analog to digital devices
c) From large-sized to portable devices
d) All of the above
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Correct Answer: d) All of the above
Explanation: The evolution of computers has seen transitions from mechanical to electronic devices, from analog to digital systems, and from large mainframes to compact and portable gadgets.
Q3. Which generation of computers is characterized by the use of transistors?
a) First generation
b) Second generation
c) Third generation
d) Fourth generation
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Correct Answer: b) Second generation
Explanation: The second generation of computers (1956-1963) is marked by the use of transistors instead of vacuum tubes, leading to smaller, more efficient, and reliable computers.
Q4. What is the role of the Central Processing Unit (CPU) in a computer?
a) To store data
b) To execute instructions
c) To provide graphical output
d) To connect to the internet
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Correct Answer: b) To execute instructions
Explanation: The CPU, often called the “brain” of the computer, executes instructions from programs by performing arithmetic, logic, control, and input/output operations.
Q5. Which of the following is NOT an input device?
a) Keyboard
b) Mouse
c) Monitor
d) Scanner
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Correct Answer: c) Monitor
Explanation: A monitor is an output device used to display information, whereas a keyboard, mouse, and scanner are input devices used to feed data into the computer.
Q6. What is the primary function of computer memory?
a) To store data temporarily
b) To permanently store data
c) To process data
d) To output data
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Correct Answer: a) To store data temporarily
Explanation: Computer memory, such as RAM (Random Access Memory), is used to temporarily store data and instructions that the CPU needs to access quickly while performing tasks.
Q7. Which type of software is used for specific tasks like word processing or spreadsheet management?
a) Application software
b) System software
c) Utility software
d) Open-source software
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Correct Answer: a) Application software
Explanation: Application software is designed to perform specific tasks, such as word processing, spreadsheet management, or photo editing, providing users with tools to accomplish their goals.
Q8. What is the difference between system software and application software?
a) System software manages hardware; application software performs tasks
b) Application software manages hardware; system software performs tasks
c) Both manage hardware
d) Both perform tasks
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Correct Answer: a) System software manages hardware; application software performs tasks
Explanation: System software, such as operating systems, manages the computer’s hardware and basic functions, while application software is designed to perform specific user-oriented tasks.
Q9. Which of the following is an example of utility software?
a) Microsoft Word
b) Antivirus program
c) Google Chrome
d) Android OS
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Correct Answer: b) Antivirus program
Explanation: Utility software is designed to help manage, maintain, and control computer resources. An antivirus program is a type of utility software used to protect a computer from malware.
Q10. What does “open source” software mean?
a) Software that is free to use
b) Software with publicly accessible source code
c) Software that requires a license
d) Software that is proprietary
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Correct Answer: b) Software with publicly accessible source code
Explanation: Open-source software has source code that is freely available to the public, allowing anyone to view, modify, and distribute the software, often fostering collaboration and innovation.