MCQs on Computer Hardware

[Set - 4]

1. Which hardware component is used to project computer visuals onto a larger screen?

A) Monitor
B) Projector
C) Scanner
D) GPU

Correct Answer: B) Projector
Explanation: A projector displays visuals from a computer or other devices onto a larger surface like a wall or screen, making it ideal for presentations or entertainment.

2. What type of hardware device is used to record live video input?

A) Barcode Scanner
B) Microphone
C) Printer
D) Webcam

Correct Answer: D) Webcam
Explanation: A webcam captures live video input, often used for video conferencing, streaming, or recording.

3. Which type of port is often used for high-definition video and audio output?

A) USB
B) VGA
C) HDMI
D) Ethernet

Correct Answer: C) HDMI
Explanation: HDMI (High-Definition Multimedia Interface) ports transmit high-definition video and audio signals, commonly used for monitors and TVs.

4. What is the primary purpose of a touchpad in laptop hardware?

A) Store data
B) Provide a pointing device
C) Display visuals
D) Enhance audio output

Correct Answer: B) Provide a pointing device
Explanation: A touchpad acts as a built-in pointing device on laptops, enabling users to control the cursor and interact with the system.

5. What type of port is commonly used for connecting external hard drives?

A) Ethernet
B) HDMI
C) USB
D) VGA

Correct Answer: C) USB
Explanation: USB ports are commonly used for connecting external hard drives due to their fast data transfer speeds and wide compatibility.

6. Which hardware device is used to connect multiple USB peripherals to a single port?

A) USB Hub
B) Docking Station
C) Ethernet Switch
D) KVM Switch

Correct Answer: A) USB Hub
Explanation: A USB hub allows multiple USB devices to connect to a single USB port on a computer, expanding connectivity.

7. What is the purpose of ergonomic design in input devices like keyboards?

A) Enhance aesthetic appeal
B) Improve typing comfort 
C) Increase speed of data input
D) Reduce power consumption

Correct Answer: B) Improve typing comfort 
Explanation: Ergonomic designs aim to minimize physical strain and improve user comfort, reducing the risk of repetitive strain injuries (RSIs).

8. Which hardware device can convert physical pages into digital formats?

A) Scanner
B) Printer
C) Monitor
D) Webcam

Correct Answer: A) Scanner
Explanation: A scanner captures images of physical documents or pages and converts them into digital formats for storage or editing.

9. What type of interface is used to connect a gaming console controller to a computer?

A) HDMI
B) USB
C) Ethernet
D) VGA

Correct Answer: B) USB
Explanation: USB interfaces are commonly used to connect gaming controllers to computers for compatibility and ease of use.

10. What type of hardware is used to generate tactile feedback in input devices?

A) Actuator
B) Sensor
C) GPU
D) Microphone

Correct Answer: A) Actuator
Explanation: Actuators generate tactile feedback, such as vibrations, in devices like gaming controllers or smartphones to enhance user interaction.

11. Which port is primarily used for high-speed data transfer in modern laptops?

A) Thunderbolt
B) VGA
C) PS/2
D) Ethernet

Correct Answer: A) Thunderbolt
Explanation: Thunderbolt ports enable high-speed data transfer, support for external displays, and power delivery, making them versatile in modern laptops.

12. What is the main function of a hardware docking station for laptops?

A) Store data
B) Expand connectivity options
C) Enhance cooling performance
D) Improve sound quality

Correct Answer: B) Expand connectivity options
Explanation: A docking station provides additional ports and features, such as Ethernet, HDMI, and USB, to increase a laptop’s functionality.

13. Which hardware device is used to improve video conferencing experiences?

A) Webcam
B) Microphone
C) External Speaker
D) All of the above

Correct Answer: D) All of the above
Explanation: A webcam captures video, a microphone records audio, and speakers provide output, all enhancing video conferencing experiences.

14. What kind of device would a KVM switch connect to in a hardware setup?

A) Keyboards, monitors, and mice
B) External storage drives
C) Printers and scanners
D) Audio devices

Correct Answer: A) Keyboards, monitors, and mice
Explanation: A KVM (Keyboard, Video, Mouse) switch allows multiple computers to share a single keyboard, monitor, and mouse, simplifying multi-system management.

15. Which port type supports charging and data transfer simultaneously for mobile devices?

A) USB-C
B) VGA
C) PS/2
D) HDMI

Correct Answer: A) USB-C
Explanation: USB-C ports are versatile, supporting both charging and high-speed data transfer, making them a standard for modern mobile devices.

16. What is the function of a chipset on the motherboard?

A) Regulate power supply
B) Store user data
C) Control audio output
D) Manage communication between CPU and peripherals

Correct Answer: D) Manage communication between CPU and peripherals
Explanation: The chipset coordinates data flow between the CPU, memory, and peripherals, ensuring efficient operation of the system.

17. Which type of processor is used in high-performance computing systems?

A) ARM Processor
B) Intel Xeon
C) AMD Ryzen
D) Qualcomm Snapdragon

Correct Answer: B) Intel Xeon
Explanation: Intel Xeon processors are designed for high-performance computing tasks like servers, workstations, and data centers due to their advanced capabilities.

18. What is the main purpose of overclocking hardware components?

A) Reduce power consumption
B) Enhance compatibility
C) Increase component performance
D) Prolong hardware lifespan

Correct Answer: C) Increase component performance
Explanation: Overclocking increases the clock speed of components like the CPU or GPU to boost performance, often used in gaming or high-demand tasks.

19. Which component handles arithmetic and logic operations in the CPU?

A) Cache Memory
B) ALU
C) Control Unit
D) GPU

Correct Answer: B) ALU
Explanation: The Arithmetic Logic Unit (ALU) performs arithmetic and logical operations within the CPU.

20. What is the purpose of hyper-threading technology in modern CPUs?

A) Increase power efficiency
B) Improve graphics rendering
C) Enhance cooling performance
D) Simulate additional processor cores 

Correct Answer: D) Simulate additional processor cores
Explanation: Hyper-threading allows a single physical core to act as two virtual cores, improving multitasking and overall performance.

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