Free Hardware and Software MCQs with Answers

21. Diameter of Compact Disk is ________?

• A. 10 cm
• B. 11 cm
• C. 12 cm
• D. None of these

Explanation: A standard compact disc has a diameter of 12 cm, or approximately 4.7 inches. The 12-cm disc is the normal full-size CD, while smaller mini-CDs are different formats.

22. What type of software is a "printer driver"?

• A. Application Software
• B. System Software
• C. Utility Software
• D. None of Above

Explanation: A printer driver is system software because it enables the operating system to communicate with and control printer hardware. It is not an end-user application such as a word processor.

23. Mac OS offers _____________ for data backup.

• A. File history
• B. Time Machine
• C. File backup
• D. None of above

Explanation: Time Machine is macOS's built-in backup and recovery feature, allowing users to save versions of files and restore them later. File History is associated mainly with Windows.

24. What is Heuristic checking?

• A. False positive
• B. Data storage
• C. Virus scanning
• D. Virus removing

Explanation: Heuristic checking is a method used by antivirus software to identify suspicious or previously unknown malware based on behavior or characteristics. It is therefore part of virus scanning, not the physical removal process.

25. The BIOS settings are stored in _________ ?

• A. EEPROM
• B. CMOS chip
• C. Memory
• D. OS

Explanation: Traditional PCs store BIOS configuration settings in battery-backed CMOS memory, commonly called the CMOS chip. Modern systems may use flash or EEPROM for firmware, but the conventional MCQ answer for BIOS settings is CMOS.

26. Hard disk drives are considered _________ storage.

• A. flash
• B. nonvolatile
• C. nonpermanent
• D. temporary

Explanation: Hard disk drives retain data when power is removed, so they are nonvolatile storage. Temporary storage, such as RAM, loses its contents when the computer is turned off.

27. Driver of computer Hardware are:__________?

• A. Application Software
• B. Utility Programme
• C. System software
• D. Productivity software

Explanation: Device drivers are system software that allow the operating system to communicate with and control hardware devices. Application and productivity software serve user tasks rather than directly managing hardware.

28. Which of the following does computing in a personal computer?

• A. CPU
• B. Motherboard
• C. RAM
• D. BIOS

Explanation: The CPU performs arithmetic, logical and control operations, so it is the component that carries out computing in a personal computer. RAM stores working data, while the motherboard connects components and BIOS starts hardware initialization.

29. RAID stands for:

• A. Redundant Array of Independent Disks
• B. Redundant Array of Independent Device
• C. Redundant Array of Independent Division
• D. None of these

Explanation: RAID means Redundant Array of Independent Disks, a method of combining multiple disks for improved performance, fault tolerance or both. “Device” and “Division” are not part of the standard expansion.

30. Which of the following is used as "Input device" for the computer?

• A. VDU
• B. TV
• C. Printer
• D. Light pen

Explanation: A light pen is an input device that lets the user select or draw directly on a compatible display. A VDU and printer are output devices, while a TV is not normally a computer input device.