Computer Hardware MCQs

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Computer Hardware MCQs

Practice Computer Hardware MCQs with answers and detailed explanations covering input devices, output devices, scanners, printers, keyboards, monitors and computer hardware components frequently asked in competitive examinations.

430
Total Questions

Practice Questions

Page 4 of 22
Question #61
What is the resolution standard for Full HD monitors?
A. 3840x2160
B. 1280x720
C. 1920x1080
D. 1024x768
Discuss
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Correct Answer: Option C

Explanation:
Full HD is 1920x1080 pixels.
This question belongs to: Computer Computer Hardware
Question #62
Which device is used to input handwritten data?
A. Stylus with graphics tablet
B. Laser printer
C. Optical mouse
D. Flatbed scanner only
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Correct Answer: Option A

Explanation:
Graphics tablets with stylus allow natural handwriting input.
This question belongs to: Computer Computer Hardware
Question #63
What is the purpose of CMOS in computers?
A. To connect USB devices
B. To store BIOS settings and system time
C. To provide power backup
D. To process graphics
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Correct Answer: Option B

Explanation:
CMOS battery-powered memory holds configuration.
This question belongs to: Computer Computer Hardware
Question #64
Bubble Jet is a technology associated with:
A. Laser printers
B. 3D printers
C. Inkjet printers
D. Dot matrix printers
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Correct Answer: Option C

Explanation:
Bubble Jet is a Canon inkjet printing technology.
This question belongs to: Computer Computer Hardware
Question #65
Which hardware component is essential for virtual memory?
A. Keyboard
B. RAM and Hard Disk
C. Monitor
D. CPU
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Correct Answer: Option B

Explanation:
Virtual memory uses HDD/SSD to extend RAM.
This question belongs to: Computer Computer Hardware
Question #66
What does HDMI stand for?
A. High Definition Multimedia Interface
B. High Density Memory Input
C. Hybrid Display Monitor Input
D. High Data Multimedia Interface
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Correct Answer: Option A

Explanation:
HDMI is used for high-quality audio and video transmission.
This question belongs to: Computer Computer Hardware
Question #67
A joystick is mainly used in:
A. Document scanning
B. Gaming and simulation
C. Printing
D. Office data entry
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Correct Answer: Option B

Explanation:
Joysticks provide precise control in games.
This question belongs to: Computer Computer Hardware
Question #68
Which is the fastest type of memory?
A. Hard Disk
B. Register in CPU
C. Cache
D. Main RAM
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Correct Answer: Option B

Explanation:
CPU registers are the fastest accessible memory.
This question belongs to: Computer Computer Hardware
Question #69
Laser printers use which type of memory for buffering print jobs?
A. Flash memory only
B. ROM
C. No memory needed
D. Printer's internal RAM
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Correct Answer: Option D

Explanation:
Printer RAM helps in handling complex print jobs.
This question belongs to: Computer Computer Hardware
Question #70
What is the main function of I/O ports?
A. Connecting input and output devices
B. Processing data
C. Storing programs
D. Cooling the system
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Correct Answer: Option A

Explanation:
Ports like USB, HDMI allow device connectivity.
This question belongs to: Computer Computer Hardware
Question #71
Which scanner is best for high-volume document scanning?
A. Drum
B. Flatbed
C. Sheet-fed
D. Handheld
Discuss
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Correct Answer: Option C

Explanation:
Sheet-fed scanners are efficient for multiple pages.
This question belongs to: Computer Computer Hardware
Question #72
The term 'overclocking' refers to:
A. Cleaning hardware
B. Increasing CPU clock speed beyond specification
C. Formatting hard disk
D. Installing new OS
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Correct Answer: Option B

Explanation:
Overclocking boosts performance but risks heat issues.
This question belongs to: Computer Computer Hardware
Question #73
What type of output is produced by a plotter?
A. Text documents
B. Vector graphics and large drawings
C. Audio files
D. Scanned images
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Correct Answer: Option B

Explanation:
Plotters are used for CAD and engineering drawings.
This question belongs to: Computer Computer Hardware
Question #74
Which component has the highest storage hierarchy in terms of speed?
A. Secondary storage
B. Tertiary storage
C. Cache memory
D. Optical drive
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Correct Answer: Option C

Explanation:
Cache is closest to CPU in memory hierarchy.
This question belongs to: Computer Computer Hardware
Question #75
DVI port is primarily used for:
A. Network connection
B. Power supply
C. Digital video signal
D. Audio transmission
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Correct Answer: Option C

Explanation:
DVI connects monitors for digital video.
This question belongs to: Computer Computer Hardware
Question #76
Which input device uses reflected light for operation?
A. Optical mouse
B. Joystick
C. Trackball
D. Mechanical mouse
Discuss
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Correct Answer: Option A

Explanation:
Optical mouse detects movement via light reflection.
This question belongs to: Computer Computer Hardware
Question #77
What is the capacity unit for modern RAM modules?
A. GB
B. TB
C. MB
D. KB
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Correct Answer: Option A

Explanation:
RAM is typically measured in gigabytes (e.g., 8GB, 16GB).
This question belongs to: Computer Computer Hardware
Question #78
Multifunction printers can perform:
A. Only scanning
B. Only projection
C. Print, scan, copy, and sometimes fax
D. Only printing
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Correct Answer: Option C

Explanation:
All-in-one printers combine multiple functions.
This question belongs to: Computer Computer Hardware
Question #79
The socket where CPU is installed is called:
A. RAM slot
B. CPU socket
C. PCI slot
D. Power socket
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Correct Answer: Option B

Explanation:
Motherboard has specific sockets for processors.
This question belongs to: Computer Computer Hardware
Question #80
What does refresh rate indicate in monitors?
A. How many times screen is redrawn per second
B. Color depth
C. Power consumption
D. Number of pixels
Discuss
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Correct Answer: Option A

Explanation:
Measured in Hz, higher reduces flicker (e.g., 144Hz).
This question belongs to: Computer Computer Hardware

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