Q21. Which of the following is a type of computer storage device?
a) Keyboard
b) Mouse
c) Hard disk drive
d) Monitor
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Correct Answer: c) Hard disk drive
Explanation: A hard disk drive (HDD) is a type of non-volatile storage device used for storing and retrieving digital data in a computer system.
Q22. What is the function of a web browser?
a) To create documents
b) To edit images
c) To access and display web pages
d) None of the above
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Correct Answer: c) To access and display web pages
Explanation: A web browser is a software application used to access and display web pages on the internet.
Q23. Which of the following is an example of an output device?
a) Keyboard
b) Mouse
c) Scanner
d) Printer
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Correct Answer: d) Printer
Explanation: A printer is an output device used to produce physical printed documents from digital data.
Q24. What is the full form of PDF?
a) Portable Document Format
b) Printable Document File
c) Portable Data File
d) None of the above
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Correct Answer: a) Portable Document Format
Explanation: PDF stands for Portable Document Format, which is a file format used for presenting and sharing documents in a consistent layout.
Q25. Which of the following is a type of computer network?
a) LAN
b) WAN
c) PAN
d) All of the above
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Correct Answer: d) All of the above
Explanation: LAN (Local Area Network), WAN (Wide Area Network), and PAN (Personal Area Network) are all types of computer networks.
Q26. What is the function of a computer virus?
a) To protect computer data
b) To improve computer performance
c) To cause harm or disrupt computer operations
d) None of the above
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Correct Answer: c) To cause harm or disrupt computer operations
Explanation: A computer virus is a type of malicious software designed to cause harm or disrupt computer operations.
Q27. Which of the following is an example of an input device?
a) Printer
b) Monitor
c) Keyboard
d) Speaker
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Correct Answer: c) Keyboard
Explanation: A keyboard is an input device used to enter data and instructions into a computer system.
Q28. What is the full form of ROM?
a) Read Only Memory
b) Random Operational Memory
c) Removable Optical Memory
d) None of the above
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Correct Answer: a) Read Only Memory
Explanation: ROM stands for Read-Only Memory, which is a type of non-volatile computer memory that permanently stores instructions and data.
Q29. Which of the following is an example of system software?
a) Microsoft Word
b) Adobe Photoshop
c) Operating System
d) Google Chrome
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Correct Answer: c) Operating System
Explanation: An operating system, such as Windows or macOS, is an example of system software that manages computer hardware and software resources.
Q30. What is the function of a computer mouse?
a) To print documents
b) To display output
c) To enter data
d) To control the movement of the cursor
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Correct Answer: d) To control the movement of the cursor
Explanation: A computer mouse is an input device used to control the movement of the cursor or pointer on the screen.