Free Hardware and Software MCQs with Answers

151. Which of the following is a storage device?

• A. Tape
• B. Hard Disk
• C. Floppy Disk
• D. All of the above

Explanation: Magnetic tape, hard disks and floppy disks are all secondary storage devices used to retain data. Therefore, the inclusive option is correct.

152. What does DMA stand for?

• A. Distinct Memory Access
• B. Direct Memory Access
• C. Direct Module Access
• D. Direct Memory Allocation

Explanation: DMA stands for Direct Memory Access, a technique that lets an I/O device transfer data directly to or from main memory with limited processor involvement. This improves transfer efficiency.

153. Which of the following is not anti- viruses software?

• A. Avira
• B. Kaspersky
• C. Oracle
• D. McAfee

Explanation: Avira, Kaspersky and McAfee are antivirus products, whereas Oracle is primarily known for database software and related enterprise products. It is therefore not the antivirus option here.

154. What do you call the programs that are used to find out possible faults and their causes?

• A. operating system extensions
• B. cookies
• C. diagnostic software
• D. boot diskettes

Explanation: Diagnostic software tests a computer or its components to detect faults and help identify their causes. Cookies store website-related data and boot diskettes mainly help start a system.

155. What characteristic of read-only memory (ROM) makes it useful?

• A. ROM information can be easily updated.
• B. Data in ROM is non-volatile, that is, it remains there even without electrical power.
• C. ROM provides very large amounts of inexpensive data storage.
• D. ROM chips are easily swapped between different brands of computers.Exploring Educational Science Kits

Explanation: ROM is non-volatile memory, so its contents remain stored when electrical power is removed. It is not intended for easy updating and does not provide large, inexpensive storage like a disk.

156. A computer cannot 'boot' if it does not have the__________?

• A. Compiler
• B. Loader
• C. Operating System
• D. Assembler

Explanation: In the conventional desktop-computer sense, booting loads the operating system so it can manage hardware and run applications. A machine may technically start firmware without an operating system, but it cannot complete a normal operating-system boot.

157. Which of the following is a part of the Central Processing Unit?

• A. Printer
• B. Key board
• C. Mouse
• D. Arithmetic & Logic unit

Explanation: The Arithmetic and Logic Unit is a CPU component that performs calculations and logical comparisons. A printer, keyboard, and mouse are peripheral devices, not parts of the CPU.

158. The capacity of 3.5 inch floppy disk was__________?

• A. 1.40 MB
• B. 1.44 GB
• C. 1.40 GB
• D. 1.44 MB

Explanation: The common 3.5-inch high-density floppy disk stored 1.44 MB, not GB. The GB choices are far too large for floppy-disk capacity.

159. What is a light pen?

• A. A Mechanical Input device
• B. Optical input device
• C. Electronic input device
• D. Optical output device

Explanation: A light pen detects light from a screen and sends position information to the computer, making it an optical input device. It is not an output device because it does not display or produce information.

160. Which of the following controls the process of interaction between the user and the operating system?

• A. User interface
• B. Language translator
• C. Platform
• D. Screen saver

Explanation: The user interface controls how a person gives commands to and receives responses from the operating system. A language translator converts programs, a platform provides the operating environment, and a screen saver is only a display utility.