Free Computer Fundamentals MCQs with Answers

81. One MB (Megabyte) is equal to ________?

• A. 1024 Byte
• B. 1024 Killobytes
• C. 1000 Bits
• D. 1024 Gigabyte

Explanation: In the traditional binary-based measurement used in such exams, 1 megabyte equals 1024 kilobytes. Strict SI usage may use 1,000 kilobytes, but that is not the convention tested here.

82. 4 nibbles equals to__________?

• A. 2 bits
• B. 4 bits
• C. 2 bytes
• D. 4 bytes

Explanation: One nibble contains 4 bits, so four nibbles contain 16 bits. Since 8 bits make one byte, 16 bits equal 2 bytes.

83. Who is known as the Father of video games ?

• A. Karl Bens
• B. Ralph H. Bear
• C. Karoline Berliner
• D. Andrew Smith Bernard

Explanation: Ralph H. Baer is widely called the father of video games because he developed the ideas and prototype behind the first home video-game console. His surname is correctly spelled Baer, not Bear.

84. Most widely Spreaded computer virus was ________ ?

• A. I love you
• B. I hate you
• C. Oracle
• D. None of these

Explanation: The ILOVEYOU virus spread rapidly through email in 2000 by sending copies of itself to a victim’s contacts, making it one of the most widespread early email viruses.

85. The digital signals can be represented by________?

• A. 0 and 1
• B. Binary Codes
• C. High and Low
• D. All of Above

Explanation: Digital information uses discrete states commonly written as 0 and 1, represented electronically as low and high signals and expressed through binary codes. Thus all three descriptions refer to digital representation.

86. The first mechanical calculator was invented in which year?

• A. 1543
• B. 1642
• C. 1858
• D. 1972

Explanation: Blaise Pascal developed the Pascaline, generally regarded as the first mechanical calculator, in 1642. It used geared wheels to perform arithmetic operations.

87. What is the Name of Google's Parent Company?

• A. Alphabet Inc
• B. Amazon
• C. The Priceline Group
• D. None of these

Explanation: Alphabet Inc. became Google's parent company after Google's 2015 corporate restructuring. Google operates as a subsidiary under Alphabet.

88. The blinking symbol on the computer screen is called ___________?

• A. mouse
• B. logo
• C. hand
• D. cursor

Explanation: The blinking mark showing where the next typed character will appear is the text cursor, also called the insertion point. A mouse is a pointing device, not the blinking screen symbol.

89. Shortcut keys to switch to the next windows ?

• A. Alt + tab
• B. Shift + Tab
• C. Alt + Ctrl
• D. Ctrl + Tab

Explanation: Alt+Tab switches between open application windows in Windows. Ctrl+Tab usually switches between documents or tabs within the same application, which is a different operation.

90. To copy a picture of the screen to the Clipboard use:_________ Command?

• A. Alt Key
• B. Shift key
• C. Print screen
• D. None of these

Explanation: The Print Screen key captures a picture of the screen and places it on the clipboard in traditional Windows usage. Alt alone or Shift alone does not perform this capture command.