Free Computer Fundamentals MCQs with Answers

151. Window key + D

• A. Show system properties
• B. Find Computers
• C. Show Desktop (toggle)
• D. Lock Desktop

Explanation: Windows key plus D shows the desktop and toggles back to the previously open windows when pressed again. It is different from Windows key plus M, which minimises windows without the same toggle behaviour.

152. Window key + E

• A. Windows Explorer
• B. Utility Manager
• C. Show Desktop (toggle)
• D. Run

Explanation: Windows key plus E opens Windows Explorer, now called File Explorer in modern Windows versions. The other choices are not assigned to this shortcut.

153. Window key + M

• A. Show system properties
• B. Help
• C. Find Computers
• D. Minimize all applications

Explanation: Windows key plus M minimises all open application windows. Windows key plus Shift plus M restores those minimised windows.

154. Window key + U

• A. Show system properties
• B. Utility Manager
• C. Show Desktop (toggle)
• D. Lock Desktop

Explanation: Windows key plus U opens Utility Manager, which provides access to accessibility tools in older Windows versions. This shortcut is associated with utilities rather than desktop display or locking.

155. Window key + F1

• A. show system properties
• B. Help
• C. Show Desktop (toggle)
• D. Run

Explanation: Windows key + F1 opens Windows Help and Support. The other shortcuts perform different actions, such as showing the desktop or opening Run.

156. XML stands for ________?

• A. Extensible Meria Letters
• B. Extensible Media Language
• C. Xtensible Markup Language
• D. Extensible Markup Language

Explanation: XML means Extensible Markup Language, a text-based language for describing and structuring data. The option with “Xtensible” omits the initial E and is therefore incorrect.

157. FAT stands for ________?

• A. Frequent Allocation Table
• B. File Allocated Table
• C. File Allocation Table
• D. File Allocation Theory

Explanation: FAT stands for File Allocation Table, a file-system table that records how files are stored and where their data clusters are located. “File Allocated Table” is not the standard expansion.

158. FM stands for ________?

• A. Frequent Modulation
• B. Frequency Modulation
• C. Frequency Method
• D. Frequency Molecules

Explanation: FM means Frequency Modulation, in which the carrier wave's frequency varies according to the information signal. The amplitude remains comparatively constant, unlike in AM.

159. JPEG stands for ________?

• A. Joint Photo Electronic Group
• B. Joint Picture Electronic Group
• C. Joint photographic experts group
• D. Joint Picture Expert Group

Explanation: JPEG expands to Joint Photographic Experts Group, the committee that developed the widely used image-compression standard. “Photographic” and “Experts” must be plural in the full name.

160. Which of the following shortcut key is used to close the program?

• A. Crt+F3
• B. F4
• C. Shif+F4
• D. Alt+F4

Explanation: Alt+F4 closes the active application window or program. F4 alone usually repeats an action or works with other keys, so it does not generally close the program.