Free Hardware and Software MCQs with Answers

161 Hardware and Software MCQs from Computer Science and IT, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

161 questions · page 1 of 17

1. Which organization has launched the quantum processor 'Willow'?

  • A. Google
  • B. Yahoo
  • C. Amazon
  • D. Microsoft

Explanation: Willow is Google's quantum processor, announced by Google Quantum AI in 2024. Yahoo, Amazon, and Microsoft have quantum-computing initiatives, but they did not launch the processor named Willow.

Correct answer: Google

2. The______________is the amount of data that a storage device can move from the storage medium to the Computer per second?

  • A. data migration rate
  • B. data digitizing rate
  • C. data transfer rate
  • D. data access rate

Explanation: Data transfer rate measures how much data a storage device can move between the storage medium and the computer per second. Access rate instead concerns how quickly data can be located or reached.

Correct answer: data transfer rate

3. Which is a volatile memory ?

  • A. ROM
  • B. RAM
  • C. BIOS
  • D. PROM

Explanation: RAM is volatile because its contents disappear when electrical power is removed. ROM, PROM, and the firmware stored in BIOS are non-volatile.

Correct answer: RAM

4. The term___________designates equipment that might be added to a computer system to enhance its functionality.

  • A. digital device
  • B. system add-on
  • C. disk pack
  • D. peripheral device

Explanation: A peripheral device is hardware added to a computer to provide or enhance functions such as input, output, storage, or communication. A system add-on is not the standard general term.

Correct answer: peripheral device

5. Latest MS Windows is__________?

  • A. Windows 8
  • B. Windows 10
  • C. Windows 11
  • D. Windows 7Word Processing Software

Explanation: Windows 11 is the latest major desktop version of Microsoft Windows. Windows 8, 10 and 7 are earlier releases.

Correct answer: Windows 11

6. 'Notification area' is available in which Desktop's function?

  • A. Windows Button
  • B. Taskbar
  • C. Title bar
  • D. None of These

Explanation: The notification area is the system-tray section of the taskbar, normally located near the clock. It displays status icons and notifications.

Correct answer: Taskbar

7. Windows+M is used for: ________?

  • A. Minimize file/folder
  • B. Maximize file/folder
  • C. Zoom file/folder
  • D. All of these

Explanation: Windows+M minimizes all open windows to show the desktop; it does not maximize or zoom files. The wording says file/folder, but option a is the closest intended choice.

Correct answer: Minimize file/folder

8. CD-ROM stands for____________?

  • A. Compactable Read Only Memory
  • B. Compact Data Read Only Memory
  • C. Compactable Disk Read Only Memory
  • D. Compact Disk Read Only Memory

Explanation: CD-ROM means Compact Disc Read-Only Memory, an optical medium whose stored data is normally not writable. Option d uses the common but technically less precise spelling Disk.

Correct answer: Compact Disk Read Only Memory

9. Which of the following are components of Central Processing Unit (CPU) ?

  • A. Arithmetic logic unit, Mouse
  • B. Arithmetic logic unit, Control unit
  • C. Arithmetic logic unit, Integrated Circuits
  • D. Control Unit, Monitor

Explanation: The CPU contains the Arithmetic Logic Unit, which performs calculations and comparisons, and the Control Unit, which directs instruction execution. A mouse and monitor are peripheral devices, not CPU components.

Correct answer: Arithmetic logic unit, Control unit

10. Which technology is used in compact disks?

  • A. Mechanical
  • B. Electrical
  • C. Electro Magnetic
  • D. Laser

Explanation: Compact discs store and read data using a laser beam that detects microscopic pits and lands on the disc surface. Mechanical and ordinary electrical technologies do not perform this optical reading process.

Correct answer: Laser