All Free Computer Science and IT MCQs with Answers

111. 'mpg' is the extension of__________?

• A. Audio
• B. Image
• C. Video
• D. Flash

Explanation: The .mpg extension identifies an MPEG video file. Audio formats commonly use extensions such as .mp3 or .wav.

112. The smallest unit of data in a computer is__________?

• A. Bit
• B. Kilobit
• C. Terabyte
• D. Byte

Explanation: A bit is the smallest unit of digital data and can have a value of 0 or 1. A byte consists of eight bits, while kilobits and terabytes are much larger units.

113. Which basic colors are used in computer graphics?

• A. GOB
• B. RWG
• C. RGB
• D. BGB

Explanation: RGB means red, green, and blue, the primary additive colors used to produce colors on computer displays. The other combinations are not the standard color model for screen graphics.

114. Linus Torvalds developed which of the following systems?

• A. LINUX
• B. iOS
• C. UNIX
• D. Windows

Explanation: Linus Torvalds initiated and developed the Linux kernel, which became the foundation of Linux operating systems. He did not develop Windows or iOS.

115. What is the shortcut key to delete data by permanently?

• A. Ctrl+delete button
• B. Shift + Delete Button
• C. Alt+delete button
• D. None of these

Explanation: Shift+Delete permanently deletes a selected file without first placing it in the Recycle Bin. This shortcut is different from ordinary Delete, which usually allows recovery from the bin.

116. RAM, Cache, Registers are called Temporary___________?

• A. Input
• B. Output
• C. Processing
• D. Storage

Explanation: RAM, cache, and registers temporarily hold data or instructions while processing occurs, so they are forms of temporary storage. They are not input, output, or processing units themselves.

117. Time during which a job processed by the Computer is__________?

• A. Real Time
• B. Required Time
• C. Execution Time
• D. None of above

Explanation: Execution time is the period during which the computer processes or runs a job. Real time describes a timing or response requirement, not the general duration of job processing.

118. Which is the default text editor for Microsoft Windows?

• A. Wordpad
• B. Ms Word
• C. Notepad
• D. None of these

Explanation: Notepad is Windows’ built-in plain-text editor and is used for creating or opening simple text files. WordPad provides richer formatting, while MS Word is a separate word-processing application.

119. Who is The First You Tuber?

• A. Jawed Karim
• B. John adris
• C. Liaqat Ali
• D. None Of These

Explanation: Jawed Karim uploaded “Me at the zoo,” the first video on YouTube, making him commonly known as the first YouTuber. The other named options are not associated with YouTube’s first upload.

120. Google is an_________multinational technology company?

• A. American
• B. Indian
• C. Italian
• D. German

Explanation: Google is an American multinational technology company founded in California. Its services are global, but its country of origin is the United States.