Q81. What is the main function of an operating system?
a) To manage computer hardware and software resources
b) To perform mathematical calculations
c) To create and edit documents
d) To provide internet access
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Correct Answer: a) To manage computer hardware and software resources
Explanation: The primary function of an operating system is to manage computer hardware and software resources, allowing other programs to run and ensuring that hardware components function correctly.
Q82. Which of the following operating systems is open-source?
a) Windows 10
b) macOS
c) Linux
d) Chrome OS
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Correct Answer: c) Linux
Explanation: Linux is an open-source operating system, meaning its source code is freely available for anyone to use, modify, and distribute.
Q83. What does the “Start Menu” in Windows allow you to do?
a) Access installed applications and system settings
b) Manage network connections
c) Monitor system performance
d) Perform file backup operations
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Correct Answer: a) Access installed applications and system settings
Explanation: The Start Menu provides access to installed applications, system settings, and other features, serving as a central hub for navigating and managing the operating system.
Q84. How can you open the “Run” dialog box in Windows?
a) Press Win + R
b) Right-click the Task Bar
c) Open File Explorer
d) Use the Control Panel
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Correct Answer: a) Press Win + R
Explanation: Pressing the Win + R key combination opens the “Run” dialog box, which allows you to quickly execute commands and open applications.
Q85. What is the purpose of the “Change System Date and Time” option?
a) To modify the computer’s clock settings
b) To adjust the display brightness
c) To manage user accounts
d) To install new software
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Correct Answer: a) To modify the computer’s clock settings
Explanation: The “Change System Date and Time” option allows users to adjust the computer’s clock settings to ensure accurate time and date information.
Q86. Which of the following options would you use to change the display resolution in Windows?
a) Settings > System > Display
b) Control Panel > Hardware and Sound
c) Device Manager
d) Windows Security
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Correct Answer: a) Settings > System > Display
Explanation: To change the display resolution in Windows, navigate to Settings, then “System,” and select “Display” to adjust the resolution and other display settings.
Q87. What action should you take to add a new printer in Windows?
a) Go to Settings > Devices > Printers & Scanners and select “Add a printer”
b) Use the Device Manager to install a new printer
c) Open File Explorer and select “Add Printer”
d) Access the Task Manager and add a printer
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Correct Answer: a) Go to Settings > Devices > Printers & Scanners and select “Add a printer”
Explanation: To add a new printer, go to Settings, then “Devices,” and select “Printers & Scanners” where you can click “Add a printer” to begin the installation process.
Q88. What is the purpose of the “Mouse Properties” settings in Windows?
a) To customize mouse pointer speed and button functions
b) To change the keyboard layout
c) To adjust system volume
d) To manage network connections
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Correct Answer: a) To customize mouse pointer speed and button functions
Explanation: The “Mouse Properties” settings allow you to customize the mouse pointer speed, button functions, and other mouse-related settings for better usability.
Q89. Which file extension is typically associated with a text file?
a) .exe
b) .txt
c) .jpg
d) .pdf
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Correct Answer: b) .txt
Explanation: The .txt file extension is commonly associated with text files, which contain plain text without formatting.
Q90. What does the term “file extension” refer to?
a) A part of the file name that indicates the file type
b) The file’s size
c) The file’s creation date
d) The file’s location
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Correct Answer: a) A part of the file name that indicates the file type
Explanation: A file extension is a suffix at the end of a file name that indicates the file type and helps the operating system determine how to open or use the file.