Free Hardware and Software MCQs with Answers

71. ALU stands for ________?

• A. Arithmetic Longest Unit
• B. Arithmetic Logic Unit
• C. Arithmetic Longest United
• D. None of these

Explanation: ALU means Arithmetic Logic Unit, the CPU component that performs arithmetic calculations and logical comparisons. The other expansions do not describe a standard computer component.

72. WMA stands for _________?

• A. Windows Medium Audio
• B. Windows Media Video
• C. Windows Media Audio
• D. Windows Medium Video

Explanation: WMA means Windows Media Audio, an audio compression and file format developed by Microsoft. Windows Media Video is represented by WMV, not WMA.

73. CPU is an example of ______?

• A. Software
• B. A program
• C. An output unit
• D. Hardware

Explanation: The CPU is a physical electronic component that executes instructions, so it is hardware. Software consists of the programs and instructions processed by the CPU.

74. Dot-matrix is a type of?

• A. Printer
• B. Disk
• C. Tape
• D. Bus

Explanation: A dot-matrix printer forms characters and images from a pattern of tiny dots made by pins striking an ink ribbon. Disk, tape, and bus are storage or data-transfer terms, not printer types.

75. Which of the following color graphics display has the highest resolution?

• A. HCA
• B. EGA
• C. CGA
• D. VGA

Explanation: VGA provides a higher-resolution color display than CGA and EGA among the listed standard adapters. HCA is not the usual standard color-graphics choice in this comparison.

76. The hardware parts of computer are _______?

• A. Firmware components
• B. Physical components
• C. Logical components
• D. All of these

Explanation: Hardware means the tangible parts of a computer, such as the keyboard, processor, monitor, and memory chips. Firmware and logical components are software-related concepts, not the definition of hardware.

77. CRT stands for ______?

• A. Crystal Ray Tube
• B. Cathode Ray Tube
• C. Cabin Ray Tube
• D. Carbon Ray Tube

Explanation: CRT means Cathode Ray Tube, the vacuum-tube display technology used in older monitors and televisions. Cathode-ray electrons strike a phosphor screen to produce the image.

78. ADF stands for ________?

• A. All Disc Feeder
• B. Automatic Document Feeder
• C. Automatic Document Finder
• D. Automatic Disc Finder

Explanation: ADF means Automatic Document Feeder, a scanner or printer mechanism that feeds multiple pages automatically. It refers to documents, not discs or searching for files.

79. AGP stands for ________?

• A. Accelerated Group Part
• B. Advanced Graphics Port
• C. Accelerated Graphics Port
• D. Advanced Group Part

Explanation: AGP means Accelerated Graphics Port, an older high-speed interface designed to connect a graphics card to the motherboard. “Advanced Graphics Port” is the usual distractor.

80. LCD stands for ________?

• A. Liquid Clear Display
• B. Light Clear Display
• C. Light Crystal Display
• D. Liquid Crystal Display

Explanation: LCD means Liquid Crystal Display, which uses liquid-crystal cells to control light and form images. “Light Crystal Display” reverses the essential term.