MCQs on Computer Hardware

[Set - 3]

1. Which hardware is used for secondary storage in laptops and desktops?

A) RAM
B) HDD/SSD
C) CPU
D) GPU

Correct Answer: B) HDD/SSD
Explanation: Secondary storage like HDDs (Hard Disk Drives) and SSDs (Solid State Drives) are used for storing operating systems, software, and data permanently, unlike RAM, which is temporary.

2. What is the maximum theoretical speed of a SATA III interface?

A) 6 Gbps
B) 3 Gbps
C) 10 Gbps
D) 5 Gbps

Correct Answer: A) 6 Gbps
Explanation: SATA III supports a theoretical maximum data transfer speed of 6 gigabits per second (Gbps), making it faster than its predecessors.

3. Which storage device provides the fastest data access times?

A) HDD
B) Optical Drive
C) SSD
D) USB Flash Drive

Correct Answer: C) SSD
Explanation: Solid State Drives (SSDs) have no moving parts, allowing them to access data significantly faster than traditional HDDs or optical drives.

4. What type of memory is integrated into a CPU for immediate data access?

A) RAM
B) ROM
C) Cache
D) VRAM

Correct Answer: C) Cache
Explanation: Cache memory is built directly into the CPU or located very close to it, providing fast access to frequently used data and instructions.

5. What is the purpose of dual-channel architecture in memory configurations?

A) To increase memory speed
B) To reduce energy consumption
C) To enhance compatibility
D) To store data permanently

Correct Answer: A) To increase memory speed
Explanation: Dual-channel architecture doubles the data transfer rate by accessing two memory modules simultaneously, enhancing performance.

6. Which hardware supports hybrid storage combining SSD and HDD features?

A) Fusion Drive
B) RAM
C) GPU
D) NAS

Correct Answer: A) Fusion Drive
Explanation: Hybrid drives like Apple’s Fusion Drive combine the speed of SSDs with the larger capacity of HDDs to optimize storage performance.

7. What is the significance of a storage device's MTBF rating?

A) Indicates the storage capacity
B) Measures data transfer speed
C) Predicts reliability over time
D) Determines power efficiency

 

Correct Answer: C) Predicts reliability over time
Explanation: MTBF (Mean Time Between Failures) estimates the reliability of a device by predicting the average time it will operate before failing.

8. What type of storage is most commonly used in portable devices?

A) SSD
B) HDD
C) Optical Drive
D) Flash Memory

Correct Answer: D) Flash Memory
Explanation: Flash memory is compact, durable, and fast, making it the ideal storage choice for portable devices like smartphones and tablets.

9. Which hardware feature allows hot-swapping of storage drives in a computer system?

A) SATA
B) RAID
C) NVMe
D) USB

Correct Answer: A) SATA
Explanation: SATA interfaces support hot-swapping, allowing drives to be added or removed without shutting down the system.

10. What is the primary function of the M.2 slot on a motherboard?

A) Connect external peripherals
B) Attach high-speed SSDs
C) Provide power to components
D) Install GPUs

Correct Answer: B) Attach high-speed SSDs
Explanation: M.2 slots support high-speed storage devices like NVMe SSDs, offering compact and efficient solutions for modern systems.

11. Which hardware component is used to digitize handwritten input?

A) Optical Drive
B) Graphics Tablet
C) Keyboard
D) Barcode Scanner

Correct Answer: B) Graphics Tablet
Explanation: Graphics tablets allow users to input handwritten or drawn content into a computer by digitizing their input.

12. What type of monitor technology is used for high refresh rates in gaming?

A) OLED
B) Plasma
C) CRT
D) TN

Correct Answer: D) TN
Explanation: Twisted Nematic (TN) panels are known for their fast refresh rates and low response times, making them suitable for gaming.

13. Which input device is commonly used for navigating virtual reality environments?

A) Mouse
B) VR Controller
C) Keyboard
D) Joystick

Correct Answer: B) VR Controller
Explanation: VR controllers are designed to interact with virtual environments, allowing users to navigate and interact within VR systems.

14. What type of port is commonly used to connect a keyboard to a computer?

A) USB
B) HDMI
C) PS/2
D) Ethernet

Correct Answer: A) USB
Explanation: Modern keyboards typically connect via USB ports for fast and reliable communication with the computer.

15. Which hardware is used to scan barcodes in retail systems?

A) RFID Reader
B) Optical Drive
C) Barcode Scanner
D) Web Camera

Correct Answer: C) Barcode Scanner
Explanation: Barcode scanners read the unique codes printed on products to facilitate inventory management and transactions.

16. What is the purpose of a docking station in computer hardware?

A) Enhance audio output
B) Expand connectivity for laptops
C) Store backup data
D) Improve cooling

Correct Answer: B) Expand connectivity for laptops
Explanation: Docking stations add additional ports and functionalities to laptops, such as USB, Ethernet, and video output.

17. Which output device produces a hard copy of digital documents?

A) Monitor
B) Printer
C) Projector
D) Speaker

Correct Answer: B) Printer
Explanation: Printers create physical copies (hard copies) of digital files like documents and images.

18. What is the most common interface for connecting printers to computers?

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

Correct Answer: A) USB
Explanation: USB is the standard interface for connecting printers to computers due to its widespread compatibility and ease of use.

19. Which input device is specifically designed for audio commands?

A) Microphone
B) Webcam
C) Joystick
D) Headphone

Correct Answer: A) Microphone
Explanation: Microphones capture audio input, making them suitable for voice commands, recording, and communication.

20. What type of display technology uses liquid crystals for visual output?

A) LED
B) LCD
C) OLED
D) Plasma

Correct Answer: B) LCD
Explanation: Liquid Crystal Display (LCD) technology uses liquid crystals and backlighting to produce visual output in monitors and TVs.

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