All Free Computer Science and IT MCQs with Answers

121. Who invented punched card to create patterns in fabric woven on a loom?

• A. Charles Babbage
• B. Joseph Jacquard
• C. William Burroughs
• D. Bush

Explanation: Joseph-Marie Jacquard developed punched cards to control weaving patterns on looms. This idea later influenced punched-card data processing and early computing.

122. Microsoft was founded in________?

• A. 1970
• B. 1972
• C. 1975
• D. 1981

Explanation: Microsoft was founded by Bill Gates and Paul Allen in 1975. The company initially developed and sold software for early personal computers.

123. Short Key of Rename any object in computer System?

• A. F2
• B. F1
• C. Ctrl+w
• D. Ctrl+F

Explanation: F2 activates rename mode for a selected file, folder, or other object in Windows. F1 normally opens Help, while Ctrl+W closes a window or document.

124. Short Key Of Window Refreshing ?

• A. F12
• B. F9
• C. F2
• D. F5

Explanation: F5 refreshes the current Windows folder, desktop, or web page. The other listed function keys do not normally perform the refresh command.

125. 4K resolutions is___________?

• A. 4496×2460
• B. 4296×2260
• C. 4196×2060
• D. 4096×2160Science

Explanation: DCI 4K cinema resolution is 4096×2160 pixels, so option d matches the standard shown here. Consumer UHD 4K is commonly 3840×2160, a related but different standard.

126. What is "Rendering" in video editing?

• A. Splitting Clips Into Several Parts
• B. Combining Clips
• C. Putting Effects Into Clips
• D. Final Step Of Video Production

Explanation: Rendering processes the edited timeline, effects, and transitions into a viewable or exportable video, commonly near the end of production. Splitting or combining clips is editing rather than rendering.

127. What is Fisheye degree view?

• A. 90 Degree
• B. 180 Degree
• C. 360 Degree
• D. None Of Above

Explanation: A conventional fisheye lens provides an extremely wide field of view of about 180 degrees. Special panoramic systems can cover 360 degrees, but 180 degrees is the standard answer for a fisheye view.

128. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

• A. Program Counter
• B. Memory Data Register
• C. Instruction Register
• D. Memory Address Register

Explanation: The Program Counter stores the address of the next instruction to be fetched or executed. The Memory Address Register holds an address currently being accessed, which is a different role.

129. Which of the following shortcut is used to Bring desktop to the top of other windows ?

• A. WinKey + M
• B. WinKey + D
• C. WinKey + SHIFT + M
• D. WinKey + CTRL + F

Explanation: Windows+D shows the desktop by minimizing or restoring open windows, effectively bringing the desktop into view. Win+M minimizes all windows but does not provide the same toggle behavior.

130. 1 nibble equals to___________?

• A. 12 bits
• B. 16 bits
• C. 4 bits
• D. 2 bits

Explanation: A nibble is a group of 4 binary bits, which is half of a byte. Therefore, 8 bits make a byte and 4 bits make a nibble.